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CHILE, or CHILI (derived, it is said,...

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Originally appearing in Volume V06, Page 153 of the 1911 Encyclopedia Britannica.
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CHILE, or CHILI (derived, it is said, from the See also:Quichua See also:chin , See also:cold, or tchili, See also:snow)  , a See also:republic of See also:South See also:America, occupying the narrow western slope of the See also:continent between See also:Peru and its See also:southern extremity . (For See also:map see See also:ARGENTINA.) It extends from the See also:northern boundary of the See also:province of See also:Tacna, about 17° 25' S., to Cape See also:Horn at the extreme southern point of the Fuegian See also:archipelago in 550 58' 40" S., with an extreme See also:meridian length of 2661 m., and with a See also:coast See also:line considerably exceeding that figure owing to a westward See also:curve of about 31° and an eastward trend south of 50° S. of nearly 8° . Its mainland width ranges from about 46 to 228 m., and its See also:area, including the islands of the southern coast, is officially computed to be 307,774 sq. m., though the See also:Gotha computation (1904) places it at 293,062 sq. in . See also:Chile is thus a ribbon-like See also:strip of territory between the See also:Andes and the Pacific, comparatively See also:regular See also:north of the 42nd parallel, but with an extremely ragged outline south of that line . It is bounded N. by Peru, E. by See also:Bolivia and Argentina, S. and W. by the Pacific . Its eastern boundary lines are described under ARGENTINA and BOLIVIA . The See also:war of 1879–81 with Peru and Bolivia gave to Chile 73,993 sq. m. of territory, or one-See also:fourth her See also:total area . By subsequent agreements the Bolivian See also:department of the Litoral, or See also:Atacama, and the Peruvian department of See also:Tarapaca, were formally ceded to Chile, and the northern frontier was removed to the See also:river Ca114arones, which enters the Pacific at 19° 12' S . Under the treaty of See also:Ancon (loth See also:October 1883) Chile was to retain See also:possession of the provinces of Tacna and See also:Arica belonging to the Peruvian department of See also:Moquegua for a See also:period of ten years, and then submit " to popular See also:vote whether those territories are to belong to Chile or Peru." At the expiration of the period (1893) Chile evaded compliance with the agreement, and under various pretexts retained forcible possession of the territory . This arbitrary retention of Tacna and Arica, which became the province of Tacna under Chilean See also:administration, removed the frontier still farther north, to the river Sama, which separates that province from the remaining See also:part of the Peruvian department of Moquegua . Starting from the mouth of that river, in 17° 57' S., the disputed boundary follows its course in an irregular N.E. direction to its source in the See also:Alto do See also:Toledo range, thence S. and E. along the See also:water parting to the Bolivian boundary line in the See also:Cordillera Silillica . Physiography.—For purposes of See also:general topographical description Chile may be divided into three regions: the See also:desert region of the north, the central agricultural region between the provinces of See also:Coquimbo and See also:Llanquihue, and the heavily-forested See also:rainy region south of See also:lat .

41° S . The desert region is an elevated arid See also:

plateau descending gradually from the Andes towards the coast, where it breaks down abruptly from elevations of 800 to 1500 ft . From the See also:sea this plateau escarpment has the See also:appearance of a range of See also:flat topped hills closely following the coast line . The See also:surface is made up of extensive plains covered with See also:sand and deposits of alkaline salts, broken by ranges of barren hills having the appearance of spurs from the Andes, and by irregular lateral ranges in the vicinity of the See also:main cordillera enclosing elevated saline plateaus . This region is rainless, barren and inhospitable, absolutely destitute of vegetation except in some small river valleys where See also:irrigation is possible, and on the slopes of some of the See also:snow-covered peaks where the water from the melting snows nourishes a scanty and coarse vege-tation before it disappears in the thirsty sands . It is very See also:rich in See also:mineral and saline deposits, however . The eastern parts of this region See also:lie within the higher ranges of the Andes and include a large See also:district awarded to Chile in 1899 (see ARGENTINA and ATACAMA) . This arid, See also:bleak area is apparently a continuation southward of the See also:great Bolivian altaplanicie, and is known as the Puna de Atacama . Its See also:average See also:elevation is estimated at 11,000 to 12,000 ft . A line of volcanoes crosses it from north to south, and extensive See also:lava beds See also:cover a considerable part of its surface . Large shallow saline lakes are also characteristic features of this region . From 28° S. the spurs from the cordillera toward the coast are more sharply defined and enclose deeper valleys, where the cultivation of the See also:soil becomes possible, at first through irrigation and then with the aid of See also:light periodical rains .

The slopes of the Andes are precipitous, the general surface is rough, and in the north the higher ground and coast are still barren . Beginning with the province of See also:

Aconcagua the coast elevations crystallize into a range of mountains, the Cordillera Maritima, which follows the See also:shore line south to the province of Llanquihue, and is continued still farther south by the See also:mountain range of Chiloe and the islands of the western coast, which are the peaks of a submerged mountain See also:chain . Lying between this coast range and the Andes is a broad valley, or See also:plain, extending from the Aconcagua river south to the Gulf of Ancud, a distance slightly over 62o m. with an average width of about 6o m . It is sometimes called the " Vale of Chile," and is the richest and most thickly-populated part of the republic . It is a highly fertile region, is well watered by numerous streams from the Andes, has a moderate See also:rain-fall, and forms an agricultural and grazing region of great productiveness . It slopes toward the south, and its See also:lower levels are filled with lakes and with depressions where lakes formerly existed . It is an alluvial plain for the greater part, but contains some sandy tracts, as in See also:ruble and See also:Arauco; in the north very little natural See also:forest is found except in the valleys and on the slopes of the enclosing mountain ranges, but in the south, where the rainfall is heavier, the plain is well covered with forest . South of 41 ° S. the See also:country is mountainous, heavily-forested and inhospitable . There are only a few scattered settlements within its See also:borders, and a few nomadic tribes of savages eke out a miserable existence on the coast . The deeply-indented coast line is filled with islands which preserve the general outline of the continent southward to the Fuegian archipelago, the outside See also:groups forming a continuation of the Cordillera Maritima . The heavy and continuous rainfall throughout this region, especially in the See also:latitude of Chiloe, gives rise to a large number of See also:rivers and lakes . Farther south this excessive precipitation is in the See also:form of snow in the Cordilleras, forming glaciers at a comparatively See also:low level which in places See also:discharge into the inlets and bays of the sea .

The extreme southern part of this region extends eastward to the See also:

Atlantic entrance to the Straits of See also:Magellan, and includes the greater part of the large See also:island of Tierra del Fuego with all the islands lying south and See also:west of it . There are some comparatively level stretches of country immediately north of the Straits, partly forested and partly grassy plains, where See also:sheep farming has been established with some degree of success, but the greater part of this extreme southern territory is mountainous, See also:cold, wet and inhospitable . The perpetual snow-line here descends to 3500 to 4000 ft. above sea-level, and the forest growth does not rise above an See also:altitude of loon to 1500 ft . It has been officially estimated that the arable lands of Chile comprise about twenty-five millions of acres (slightly over 39,000 sq m.), or very nearly one-eighth of its total area . Moantalns . The desert regions of the north include comparatively large areas of plains and gently sloping surfaces, traversed by ranges of barren hills . The See also:remainder of the republic, probably more than three-fifths of its surface, is extremely mountainous . The western slopes of the Andes, with its spurs and lateral ranges, cover a broad See also:zone on the eastern See also:side of the republic, and the Cordillera Maritima covers another broad See also:acne on its western side from about lat . 33° to the southern extremity of Chiloe, or below lat . 43° . This maritime range is traversed by several river valleys, some of which, like the Bio-Bio, are broad and have so See also:gentle a slope as to be navigable . The Andes, however, See also:present an unbroken barrier on the See also:east, except at a few points in the south where the general elevation is not over 5000 to 6eoo ft., and where some of the Chilean rivers, as the Palena and See also:Las Heras, have their See also:sources on its eastern side .

From the 52nd to about the 31st parallel this great mountain See also:

system, known locally as the Cordillera de los Andes, apparently consists of a single chain, though in reality it includes See also:short lateral ranges at several points; continuing northward several parallel ranges.appear on the See also:Argentine side and one on the Chilean side which are ultimately merged in the great Bolivian plateau . The Chilean lateral range, which extends from the 29th to the 19th See also:parallels, traverses an elevated desert region and possesses several noteworthy peaks, among which are Cerro Bolson, 16,017 ft., and Cerro Dona Ines, 16,706 ft . It is broken to some extent in See also:crossing the province of See also:Antofagasta, the southern See also:division being known as the Sierra de Huatacondo . At the southern frontier of Bolivia the main chain, which has served as the boundary line between Argentina and Chile, divides into two great ranges, the See also:principal one continuing almost due north along the eastern side of the great Bolivian alta-planicie, and the other forming its western rim, where See also:GEOGRAPHY] it is known as the Cordillera Silillica, and then following the trend of the coast north-westward into Peru becomes the Cordillera Occidental . The western slopes of the Andes are precipitous, with short spurs enclosing deep valleys . The whole system is volcanic, and a considerable number of volcanoes are still intermittently active, noticeably in central and southern Chile . The culminating point of the Chilean Andes is Aconcagua, which rises to a height of 23,097 ft . In southern Chile the coast is highly mountainous, but the relation of these elevations to the Andes has not been clearly determined . The highest of these apparently detached groups are Mt . See also:Mace (lat . 8S.), 9711 ft., and Mt . Arenales (about 47° S. lat.), 11,286 ft .

See also:

Cathedral See also:Peak on See also:Wellington Island rises to a height of 3838 ft. and the highest point on Taytao See also:peninsula to 3937 ft . The coast range of central Chile has no noteworthy elevations, the culminating point in the province of See also:Santiago being 7316 ft . Between central Chile and the northern desert region there is a highly mountainous district where distinct ranges or elongated spurs See also:cross the republic from the Andes to the coast, forming transverse valleys of great beauty and fertility . The most famous of these is the " Vale of See also:Quillota " between See also:Valparaiso and Santiago . The Chilean Andes between Tacna and See also:Valdivia are crossed by 24 passes, the See also:majority of them at elevations exceeding 1o,000 ft . The best-known of these is the Uspallata pass between Santiago and the Argentine See also:city of See also:Mendoza, 12,870 ft. above: sea-level . The passes of central and southern Chile are used only in the summer See also:season, but those of northern Chile are open throughout the whole See also:year . The volcanic origin of the Andes and their comparatively See also:recent elevation still subject Chile, in See also:common with other parts of the western coast region, to frequent volcanic and seismic disturbances . In some instances since See also:European occupation, violent See also:earthquake shocks have resulted in considerable elevations of certain parts of the coast . After the great earthquake of 1835 See also:Captain See also:Robert See also:FitzRoy (1805–1865) of H.M.S . " Beagle " found putrid See also:mussel-shells still adhering to the rocks to ft. above high water on the island of See also:Santa Maria, 30 M. from See also:Concepcion, and See also:Charles See also:Darwin declares, in describing that disaster, that " there can be no doubt that the See also:land See also:round the See also:bay of Concepcion was upraised two or three feet." These upheavals, however, are not always permanent, the upraised land sometimes settling back to its former position . This happened on the island of Santa Maria after 1835 .

The existence of sea-shells at elevations of 350 to 1300 ft. in other parts of the republic shows that these forces, supplemented by a See also:

gradual uplifting of the coast, have been in operation through See also:long periods of See also:time and that the greater part of central and southern Chile has been raised from the sea in this way . These earthquake shocks have two distinct characteristics, a slight vibration, sometimes almost imperceptible, called a temblor, generally occurring at frequent intervals, and a violent See also:horizontal or rotary vibration, or See also:motion, also repeated at frequent intervals, called a terremoto, which is caused by a fracture or displacement of the See also:earth's strata at some particular point, and often results in considerable damage . When the earthquake occurs on the coast, or beneath the sea in its vicinity, tidal waves are sometimes formed, which cause even greater damage than the earthquake itself . Arica has been three times destroyed by tidal waves, and other small towns of the north Chilean coast have suffered similar disasters . Coquimbo was swept by a tidal See also:wave in 1849, and Concepcion and See also:Talcahuano were similarly destroyed in 1835 . The great earth-quake which partially destroyed Valparaiso in 1906, however, was not followed by a tidal wave . These violent shocks are usually limited to comparatively small districts, though the vibrations may be See also:felt at long distances from the centre of disturbance . In this respect Chile may be divided into at least four great earthquake areas, two in the desert region, the third enclosing Valparaiso, and the fourth extending from Concepcion to Chiloe . A study of Chilean earthquake phenomena, however, would probably See also:lead to a division of southern Chile into two or more distinct earthquake areas . The coast of Chile is fringed with an extraordinary number of islands extending from Chiloe S. to Cape Horn, the grouping of which Coast. shows that they are in part the summits of a submerged mountain chain, a continuation southward of the Cordillera Maritima . Three groups of these islands, called the Chiloe, Guaytecas and Chonos archipelagoes, lie N. of the Taytao peninsula (lat . 450 50' to 46° 55' S.), and with the mainland to the E. form the province of Chiloe .

The largest of these is the island of Chiloe, which is inhabited . Some of the smaller islands of these groups are also inhabited, though the excessive rainfall of these latitudes and the violent See also:

westerly storms render them highly unfavourable for human occupation . Some of the smallest islands are barren rocks, but the majority of them are covered with forests . These archipelagoes are separated from the mainland in the north by the gulfs of Chacao (or Ancud) and Corcovado, 30 to 35 M. wide, which appear to be a submerged part of the great central valley of Chile, and farther south by the narrower Moraleda channel, which terminates southward in a confusing network of passages between the mainland and the islands of the Chonos See also:group . One of the narrow parts of the Chilean mainland is to be found opposite the upper islands of this group, where the accidental juxtaposition of Magdalena island, which in-dents the continent over See also:half a degree at this point, and the See also:basin of See also:Lake See also:Fontana, which gives the Argentine boundary a sharp143 See also:wedge-shaped See also:projection westward, narrows the distance between the two to about 26 m . The Taytao peninsula, incorrectly called the Tres Montes on some maps, is a westward projection of the mainland, with which it is connected by the narrow See also:isthmus of Ofqui, over which the natives and See also:early missionaries were accustomed to carry their boats between the Moraleda Channel and Gulf of Penas . A short See also:ship See also:canal here would give an uninterrupted and protected inside passage from Chacao Channel all the way to the Straits of Magellan, a distance of over 760 m . A southern incurving projection of the See also:outer shore-line of this peninsula is known as Tres Montes peninsula, the most southern point of which is a cape of the same name . Below the Taytao peninsula is the broad open Gulf of Penas, which carries the coast-line eastward fully See also:loo m. and is noticeably See also:free from islands . The northern entrance to Messier Channel is through this gulf . Messier, See also:Pitt, Sarmiento and See also:Smyth's Channels, which form a comparatively safe and remarkably picturesque inside route for small steamers, about 338 m. in length, See also:separate another See also:series of archipelagoes from the mainland . These channels are in places narrow and tortuous .

Among the islands which thickly fringe this part of the coast, the largest are Azopardo (lying within See also:

Baker Inlet), See also:Prince See also:Henry, Campana, Little Wellington, Great Wellington and Mornington (of the Wellington archipelago), Madre de Dios, See also:Duke of See also:York, See also:Chatham, See also:Hanover, See also:Cambridge, Contreras, See also:Rennell and the See also:Queen See also:Adelaide group of small barren rocks and islands lying immediately north of the Pacific entrance to the Straits of Magellan . The large number of See also:English names on this coast is due to the fact that the earliest detailed survey of this region was made by English See also:naval See also:officers; the charts prepared from their surveys are still in use and form the basis of all subsequent maps . None of these islands is inhabited, although some of them are of large See also:size, the largest (Great Welling-ton) being about loo m. long . It has likewise been determined, since the boundary dispute with Argentina called See also:attention to these territories and led to their careful exploration at the points in dispute, that Skyring Water, in lat . 53° S., opens westward into the Gulf of Xaultegua, which transforms See also:Ponsonby Land and See also:Cordoba '(or See also:Croker) peninsula into an island, to which the name of Riesco has been given . The existence of such a channel was considered probable when these inland See also:waters were first explored in 1829 by Captain FitzRoy, but it was not discovered and surveyed until three-quarters of a See also:century had elapsed . Belonging to the Fuegian group south of the Straits of Magellan are Desolation, Santa Ines, See also:Clarence, See also:Dawson, See also:Londonderry, See also:Hoste, Navarin and See also:Wollaston islands, with innumerable smaller islands and rocks fringing their shores and filling the channels between them . Admirable descriptions of this inhospitable region, the farthest south of the inhabited parts of the globe, may be found in the Narrative of the See also:Surveying Voyages of His See also:Majesty's See also:Ships "See also:Adventure" and "Beagle" between the years 2826 and 1836 (3 vols., 1839) . The western and -larger part of Tierra del Fuego (q.v.) belongs to Chile . About 63 m . S.W. of Cape Horn, in lat . 56 25' S., is the Diego Ramirez group of small, rocky islands, the most southern possession of the republic .

Its westernmost possessions are See also:

Sala-y-See also:Gomez and See also:Easter islands, the former in about 27° S., 105° W., and the latter, the easternmost inhabited Polynesian island, in 27° 6' S., 109° 17' W . Much nearer the Chilean coast (396 m.), lying between the 33rd and 34th parallels, are the three islands of the Juan See also:Fernandez group, and rising apparently from the same submerged plateau about 500 M. farther north of the latter are the rocky islets of See also:San Ambrosio and San See also:Felix, all belonging to Chile . North of Chiloe there are few islands in See also:close proximity to the coast . The more important of these are La Mocha, off the southern coast of Arauco, in lat . 38° 2o' S., which is 8 m. long and rises to an elevation of 1240 ft. above the sea; Santa Maria, 30 M. south-west of Concepci6n, which partially encloses the Bay of Arauco and is well cultivated; and Quiriquina, lying off the See also:port of Talcahuano in the entrance to Concepcion bay . There are a few barren islands on the desert coast, the largest of which are between Coquimbo and Caldera . Since the removal of their See also:guano deposits they have become practically worthless, except where they serve to shelter anchorages . ' The coast of northern and central Chile is singularly deficient in See also:good harbours . Those of the desert region are only slight indentations in a remarkably See also:uniform coast-line, sheltered on Harbours. one side by a point of land, or small island . The landings are generally dangerous because of the surf, and the anchorages are unsafe from storms on the unprotected side . Among the most frequented of these are Valparaiso, Coquimbo, Caldera, See also:Iquique and Arica . There are some small harbours for See also:coasting vessels of light See also:draught along the coast of central Chile, usually at the partially obstructed mouths of the larger rivers, as San See also:Antonio near the mouth of the Maipe, Constitucien at the mouth of the See also:Maule, and Llico on the outlet of Lake Vichuquen, but there is no See also:harbour of importance until Concepcion (or Talcahuano) Bay is reached .

There are three harbours on this bay, El Tome, Penco and Talcahuano (q.v.), the last being the largest and best-protected port on the inhabited part of the Chilean coast . Immediately south of this bay is the large Bay of Arauco, into which the Bio-Bio river discharges, and on which, sheltered 'by the island of Santa Maria, are the ports of Coronet and Lota . The next important harbour is that of El See also:

Corral, at the mouth of the Valdivia river and 15 m. below the city of Valdivia . The Bay of San See also:Carlos on the northern coast of Chiloe, which opens upon the narrow Chacao channel, has the port -f Ancud, or San Carlos, and is rated an excellent harbour for vessels of light and See also:medium draught . Inside the island of Chiloe the large gulfs of Chacao (or Ancud) and Corcovado are well protected from :he severe westerly storms of these latitudes, but they are little used because the approach through the Chacao channel is tortuous and only 2 to 3 M. wide, and the two gulfs, though over 30 M. wide and i co m. long, are beset with small rocky islands . At the north end of the first is the Reloncavi, a large and nearly landlocked bay, on which stands Puerto See also:Montt, the southern See also:terminus of the Chilean central railway . The large Gulf of Penas, south of Taytao peninsula, is open to the westerly storms of the Pacific, but it affords entrance to several natural harbours . Among these are the Gulfs of Tres Montes and San Estevan, and See also:Tarn Bay at the entrance to Messier Channel . The next 300 M. of the Chilean coast contain numerous bays and inlets affording safe harbours, but the mainland and islands are uninhabited and the See also:climate inhospitable . Behind Rennell Island in lat . 52° S., however, is a See also:succession of navigable estuaries which penetrate inland nearly to the Argentine frontier . The central part of this group of estuaries is called See also:Worsley See also:Sound, and the last and farthest inland of its arms is Last See also:Hope Inlet (Ultima Esperanza), on which is situated the Chilean agricultural See also:colony of Puerto Consuelo .

The Straits of Magellan, about 36o m. in length, lie wholly within Chilean territory . Midway of them is situated Punta Arenas, the most southern See also:

town and port of the republic . Except in the extreme south the See also:hydrography of Chile is of the simplest description, all the larger rivers having their sources in the Rivers, Andes and flowing westward to the Pacific . Their courses are necessarily short, and only a few have navigable channels, the aggregate length of which is only 705 M . Nearly all rivers in the desert region are lost in the sands long before reaching the coast . Their waterless channels are interesting, however, as See also:evidence of a time when climatological conditions on this coast were different . The principal See also:Divers of this region are Sama (which forms the provisional boundary line with Peru), Tacna, Camarones, Loa, Copiapo, Huasco, Elqui, Limari and Choapa . The Loa is the largest, having its sources on the slopes of the Cordillera south of the Minho See also:volcano, between 21° and 21 ° 30' S. lat., and flowing south on an elevated plateau to Chiuchiu, and thence west and north in a great curve to Quillaga, whence its dry channel turns westward again and reaches the Pacific in lat . 21 ° 28' S., a few See also:miles south of the small port of Huanillos . Its total length is estimated at 250 M . The upper courses of the river are at a considerable elevation above the sea and receive a large See also:volume of water from the Cordilleras . The water of its upper course and tributaries is sweet, and is conducted across the desert in pipes to some of the coast towns, but in its lower course, as in all the rivers of this region, it becomes brackish .

The Copiapo, which once discharged into the sea, is now practically exhausted in irrigating a small fertile valley in which stands the city of that name . The Copiapo and Huasco have comparatively short courses, but they receive a considerable volume of water from the higher sierras . The latter is also used to irrigate a small, cultivated valley . The rivers of the province of Coquimbo—the Elqui or Coquimbo, Limari and Choapa—exist under less arid conditions, and like those of the province of Aconcagua—the Ligua and Aconcagua—are used to irrigate a much larger area of cultivated territory . The central agricultural provinces are traversed by several important rivers, all of them rising on the western slopes of the snow-clad Andes and breaking through the lower coast range to the Pacific after being extensively used to irrigate the great central valley of Chile . These are the Maipo (Maypo or Maipu), Rapel, Mataquito, Maule, Itata, Bio-Bio, Imperial, Tolten, Valdivia or Calle-Calle, Bueno and Maullin . With the exception of the first three, these rivers have short navigable channels, but they are open only to vessels of light draught because of sand-bars at their mouths . The largest is the Bio-Bio, which has a total length of 220 m., 100 of which are navigable . These rivers have been of great service in the agricultural development of this part of Chile, affording means of transportation where See also:

railways and highways were entirely lacking . Some of the larger tributaries of these rivers, whose economic value has been equally great, are the Mapocho, which flows through Santiago and enters the Maipo from the north; the turbulent Cachapoal, which joins the Rapel from the north; the Claro, which waters an extensive part of the province of See also:Talca and enters the Maule from the north; the Ruble, which rises in the higher Andes north of the peaks of Chillan and flows entirely across the province of Nuble to join the Itata on its western frontier; the Laja, which rises in a lake of the same name near the Argentine frontier in about lat . 35° 30' S. and flows almost due west to the Bio-Bio; and the See also:Cautin, which rises in the north-east corner of Cautin and after a tortuous course westward nearly across that province forms the principal confluent of the Imperial . The unsettled southern regions of Chiloe (mainland) and See also:Magallanes are traversed by a number of important rivers which have been only partially explored .

They have their sources in the Andes, some of them on the eastern side of the line of highest summits . The Puelo has its origin in a lake of the same name in Argentine territory, and flows north-west through the Cordilleras into an See also:

estuary (Reloncavi Inlet) of the Gulf of Reloncavi at the northern end of the Gulf of Chacao . Its lowercourse is impeded in such a manner as to form three small lakes, called See also:Superior, Inferior and Taguatagua . A large northern tributary of the Puelo, the Manso, has its sources in Lake Mascardi and other lakes and streams south-east of the Cerro Tronador, also in Argentina, and flows south-west through the Cordilleras to unite with the Puelo a few miles west of the 72nd meridian . The Reloncavi Inlet also receives the outflow of Lake Todos los See also:Santos through a short tortuous stream called the Petrohue . The Comau Inlet and river form the boundary line between the provinces of Llanquihue and Chiloe, and See also:traverse a densely wooded country in a north-westerly direction from the Andes to the north-eastern shore of the Gulf of Chacao . Continuing southward, the Yelcho is the next important river to traverse this region . It drains a large area of Argentine territory, where it is called the Rio Fetaleuf u or Fetalauquen, its principal source being a large lake of the same name . It flows south-west through the Andes, and then north-west through Lake Yelcho to the Gulf of Corcovado . The Argentine colony of the 16th of October, settled principally by Welshmen from See also:Chubut, is located on some of the upper tributaries of this river, in about lat . 43° S . The Palena is another river of the same See also:character, having its source in a large frontier lake called General Paz and flowing for some distance through Argentine territory before crossing into Chile .

It receives one large tributary from the south, the Rio See also:

Pico, and enters an estuary of the Gulf of Corcovado a little north of the 44th parallel . The Frias is wholly a Chilean river, draining an extensive Andean region between the 44th and 45th parallels and discharging into the Puyuguapi channel, which separates Magdalena island from the mainland . The Aisen also has its source in Argentine territory near the 46th parallel, and drains a mountainous region as far north as the 45th parallel, receiving numerous tributaries, and discharging a large volume of water into the Moraleda channel in about lat . 45° 20 S . The lower course of this river is essentially an inlet, and is navigable for a short distance . The next large river is the Las Heras, or Baker, through which the waters of Lakes Buenos Aires and Pueyrredon, or Cochrane, find their way to the Pacific . Both of these large lakes are crossed by the boundary line . The Las Heras discharges into Martinez Inlet, the northern part of a large estuary called Baker or Calen Inlet which penetrates the mainland about 75 M. and opens into Tarn Bay at the south-east corner of the Gulf of Penas . Azopardo (or See also:Merino Jarpa) island lies wholly within this great estuary, while at its mouth lies a group of smaller islands, called Baker Islands, which separate it from Messier Channel . The course of the Las Heras from Lake Buenos Aires is south and south-west, the short range of mountains in which are found the Cerros San Valentin and Arenales forcing it southward for an outlet . Baker Inlet also receives the waters of still another large Argentine-Chilean lake, San See also:Martin, whose far-reaching See also:fjord-like arms extend from lat . 49° I0' to 48° 20' S.; its north-west See also:arm drains into the See also:Toro, or La Pascua, river .

Lake San Martin lies in a crooked deeply cut passage through the Andes, and the See also:

divide between its southern extremity (See also:Laguna See also:Tar) and Lake Viedma, which discharges through the Santa Cruz river into the Atlantic, is-so slight as to See also:warrant the See also:hypothesis that this was once a strait between the two oceans . After a short north-westerly course the Toro discharges into Baker Inlet ir. lat . 48° 15' S., long . 73° 24' W . South of the Toro there are no large rivers on this coast, but the narrow fjords penetrate deeply into the mountains and bring away the drainage of their snow-capped, See also:storm-swept elevations . A See also:peculiar network of fjords and connecting channels terminating inland in a peculiarly shaped See also:body of water with long, widely branching arms, called Worsley Sound, Obstruction Sound and Last Hope Inlet, covers an extensive area between the 51st and 53rd parallels, and extends nearly to the Argentine frontier . It has the characteristics of a tidewater river and drains an extensive region . The sources of the Argentine river Coile are to be found among the lakes and streams of this same region, within Chilean territory . A noteworthy peculiarity of southern Chile, from the Taytao peninsula (about 46° so' Si lat.) to Tierra del Fuego, is the large number of glaciers formed on the western and southern slopes of the Cordilleras and other high elevations, which discharge See also:direct into these deeply cut estuaries . Some of the larger lakes of the Andes have glaciers discharging into them . The formation of these icy streams at comparatively low levels, with their discharge direct into tidewater estuaries, is a phenomenon not to be found elsewhere in the same latitudes . The lakes of Chile are numerous and important, but they are found chiefly in the southern half of the republic .

In the north the only lakes are large lagoons, or morasses, on the upper Lakes. saline plateaus between the 23rd and 28th parallels . They are fed from the melting snows and periodical storms of the higher Andes, and most of them are completely dry part of the year . Their waters are saturated with saline compounds, which in some cases. have considerable commercial value . In central Chile above the io-Bio river the lakes are small and have no See also:

special See also:geographical See also:interest, with the exception perhaps of the Laguna del Maule, in 36' 7' S., and Laguna de la Laja, in 37° 20' ,which lie in the Andes near the Argentine frontier and are sources of the two rivers of the same names . Below the Bio-Bio river there is a line of large picturesque lakes extending from the province of Cautin, south through that of Llanquihue, corresponding in character and position to the dry lacustrine depressions extending northward in the same valley . They lie on the eastern side near the Cordilleras, and serve the purpose of great reservoirs for the excessive precipitation of rain and snow on their western slopes . With one exception they all drain westward into the Pacific through short and partly navigable rivers, and some of the lakes are also utilized for steamship See also:navigation . These lakes are Villarica on the southern frontier of Cautin, Rinihue and Ranco in Valdivia, and Puyehue, Rupanco, Llanquihue and Todos los Santos in Llanquihue . The largest of the number are Lakes Ranco and Llanquihue, the former with an estimated area of 200 sq. m. and the latter of 300 sq. m . Lake Todos los Santos is situated well within the Andean foothills north-east of Puerto Montt and at an elevation of 509 ft., considerably above that of the other lakes, Lake Ranco being 230 ft. above sea-level . The great Andean lakes of General Paz (near the 44th parallel), Buenos Aires (in lat . 46° 30' S.), Pueyrredon, or Cochrane (470 15' S.) and San Martin (49° S.), lie partly within Chilean territory .

In the extreme south are Lagoa Blanca, a large fresh-water lake in lat . 52° 30' S., and two large inland See also:

salt-water sounds, or lagoons, called See also:Otway Water and Skyring Water, connected by FitzRoy Passage . See also:Geology.—Chile may be divided longitudinally into two regions which differ from each other in their See also:geological structure . Along the coast lies a See also:belt of See also:granite and schist overlaid unconformably by Cretaceous and See also:Tertiary deposits; inland the mountains are formed chiefly of folded Mesozoic beds, together with volcanic rocks of later date . The great See also:longitudinal valley of Chile runs approximately, but only approximately, along the boundary between the two zones . Towards the north the coastal zone disappears beneath the sea and the Andean zone reaches to the shore . The See also:ancient rocks which form the most characteristic feature of the former do indeed occur upon the coast of Peru, but in the north of Chile they are found only in isolated masses See also:standing close to the shore or, as at Mejillones, projecting into the sea . South of Antofagasta the old rocks form a nearly continuous See also:band along the coast, extending as far as Cape Horn and Staten Island, and occupying the greater part of the islands of southern Chile . Lithologically they are crystalline See also:schists, together with granite, See also:diorite, See also:gabbro and other igneous rocks . They are known to be pre-See also:Jurassic, but whether they are Palaeozoic or Archaean is uncertain . They are strongly folded and are overlaid unconformably by Cretaceous and Tertiary deposits . In the north both the Cretaceous and Tertiary beds of this zone are limited in extent, but towards the south Mesozoic beds, which are at least in part Cretaceous, form a band of considerable width .

The Tertiary beds include both marine and terrestrial deposits, and appear to be chiefly of See also:

Miocene and See also:Pliocene See also: