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PENNSYLVANIA , a See also:North See also:Atlantic See also:state of the See also:United States of See also:America and one of the See also:original thirteen, lying for the most See also:part between latitudes 390 43' 26.3" and 420 N. and between longitudes 74° 40' and 8o° 31' 36" W . The state is in the See also:form of a rectangle, except in the north-See also:west where a triangular See also:projection, extending to 42° 15' N. See also:lat., gives it a See also:shore-See also:line of almost 40 M. on See also:Lake See also:Erie, on the See also:east where the See also:Delaware See also:river with two large bends separates it from New See also:York and New See also:Jersey, and in the See also:south-east where the arc of a circle which was described with a 12-m. See also:radius from New See also:Castle, Delaware, forms the boundary between it and Delaware . The See also:forty-second parallel of N. See also:latitude forms the boundary between it and New York on the N.; See also:Mason and See also:Dixon's line is the border between it and See also:Maryland and West See also:Virginia on the south and a north and south line marks the boundary between it and West Virginia and See also:Ohio on the west . The See also:total See also:area is 45,126 sq. m. and of this 294 sq. m. are See also:water See also:surface . See also:Physical Features.—Pennsylvania skirts the coastal See also:plain in the south-east below See also:Philadelphia, is traversed from north-east to south-west by the three divisions of the Appalachian See also:province—See also:Piedmont or older Appalachian See also:belt, younger Appalachian ridges and valleys and See also:Alleghany See also:plateau—and in the north-west corner is a small part of the Erie plain . The entire surface has a mean See also:elevation of about i roo ft. above the See also:sea . It rises from 20 ft. or less on the See also:bank of the Delaware between Philadelphia and See also:Chester to 2000-3000 ft. on the higher ridges in the See also:middle See also:section (3136 ft. on See also:Blue Knob in See also:Bedford See also:county), and falls again to 900-1000 ft. on the Ohio border and to 750 ft. or less on the Erie plain; in the south-east is an area of about 6ioo sq. in. that is less than 500 ft. above the sea, while on the ridges in the middle of the state is an aggregate area of about 2000 sq. m. that everywhere exceeds 2000 ft. in elevation . The area below 500 ft. is mostly in the Triassic See also:lowland of the Piedmont region, or, as the Pennsylvania portion of it is called, the south-east province . This is an undulating plain which has been produced by the wearing away of weak sandstones, &c . On the north and west See also:borders of this plain are two parts of a See also:chain of semi-detached and usually rounded hills, known as the South Mountains . The north-east part is a south-westward See also:arm of the New See also:England uplands, is known as the See also:Reading Prong, and extends from New Jersey through See also:Easton to Reading . The south-west part is a north-eastern prolongation of the Virginia Piedmont, is known as the See also:Cumberland Prong, and extends N.N.E. through the south part of Cumberland county . In the Reading Prong most of the hills rise 900-1000 ft. above the sea and about one-See also:half that height above the surrounding See also:country; in the Cumberland Prong their height increases to the southward until, on the Maryland border, they rise 2100 ft. above the sea and 1400 ft. above the adjoining plain . Another range of hills, known as the Trenton Prong, extends from the See also:northern suburbs of Philadelphia both westward and southward through Chester, Delaware, See also:Lancaster and York counties, but these rise only 400-600 ft. above the sea and have few steep slopes . Both of these ranges of hills are composed of hard crystalline rocks, and between them lies the lowland eroded on the weaker sandstones and sediments . In Bucks and See also:Montgomery counties is a large See also:sandstone area; traversing Chester county is the narrow Chester Valley with a See also:limestone bottom, and in Lancaster county is the most extensive limestone plain . The Pennsylvania portion of the younger Appalachian ridges and valleys, known as the central province of the state, embraces the region between the South Mountains, on the south-east, and the See also:crest of the Alleghany plateau or Alleghany Front, on the north-west . It extends from south-west to north-east about 230 M. and has a nearly See also:uniform width of 5o m. except that it narrows rapidly as it approaches the north-east corner of the state . The ridges and intervening valleys, See also:long parts of which have an approximately parallel trend from south-west to north-east, were formed by the erosion of folded sediments of varying hardness, the weak belts of See also:rock being etched out to form valleys and the hard belts remaining as See also:mountain ridges . After the folding the whole region was worn down nearly to sea-level, forming a See also:low plain which bevelled across the See also:geological structure of the entire state, including the Piedmont area to the south-east and the plateau area to the north-west . Then came a broad uplift followed by the erosion which carved out the valleys, leaving hard rocks as mountain ridges which rise about to the level of the old erosion plain . In Bedford county and elsewhere the ridges rise to 2400 ft. or more above the sea, but their more usual height is 1400 to 2000 ft. above the sea and 500 to loon ft. above the intervening valleys . Their crest lines are often of nearly uniform height for See also:miles and generally are little broken except by an occasional V-shaped See also:wind See also:gap, a narrow water gap or a rounded knob . The valleys rarely exceed more than a few miles in width, are usually steep-sided, and frequently are traversed by See also:longitudinal ranges of hills and See also:cross ridges; but the Pennsylvania portion of the Appalachian or See also:Great Valley, which forms a distinct See also:division of the central province and lies between the South Mountains and the long rampart of Blue Mountain, is about to m. in width on the Maryland border and to the north-east its width increases to 20 M .
The north-west part of it is a See also:slate belt that has been much dissected by eroding streams, but the south-east part is a gently See also:rolling belt of limestone to which occasionally a steep See also:
The Monongahela is an older stream, but like the Allegheny, it meanders much, and both rivers flow in deeply intrenched valleys
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The few small lakes of the state are mostly on the Pocono plateau, where they were formed by glaciation; here, too, are some streams with picturesque cascades
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See also:Fauna.—Under the See also:protection of a See also:game See also:commission which was created in 1895, of some game preserves which have been established by this commission, and of various See also:laws affecting See also:wild animals and birds, the See also:numbers of Virginia See also:deer, See also:black See also:bear, rabbits, ruffed See also:grouse, See also:quail and wild turkeys have increased until in some of the wilder sections they are quite plentiful, while the numbers of weasels, minks, See also:lynx and foxes have been diminished
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Squirrels, racoons, woodchucks and skunks are See also:common, and See also:musk-rats, porcupines and opossums are found in some sections
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Two See also:species of venomous See also:snakes—the See also:rattlesnake and the See also:copper-head—occur in the sparsely settled regions
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The avifauna include—among the birds of See also:prey—the red-shouldered See also:hawk, red-tailed hawk, See also:marsh hawk, See also:
The blue pike, See also:whitefish and herring, obtained on Lake Erie are ol.considerable commercial importance
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In 1908 the total catch on Lake Erie was valued at $200,8 , the principal items being herring ($90,108), blue pike ($13,657) and whitefish ($31,580)
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The catch of herring was twice as much in 1908 as in 1907 and that of whitefish nearly four times as much in 1908 as in 1907; this increase was attributed to the work of the state hatcheries
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There were eight hatcheries in 1910 and the number of See also:fish distributed from these during 1908 was about 662,000,000; they consisted chiefly of pickerel, yellow perch, wall-eyed pike, See also: The mean See also:annual temperature decreases to the north-westward on the Alleghany plateau, but on the Erie plain, in the extreme north-west, Lake Erie exerts its moderating See also:influence, the mean temperature rises, and extremes shorten . The mean annual temperature in the south-east province is about 52 ° F.; it decreases to 50° in the central province and to 470 or less in some of the north-west counties of the Alleghany plateau, but rises to 49° on the shore of Lake Erie . At Philadelphia the mean temperature in winter (See also:December, See also:January and See also:February) is 340, the mean temperature in summer (See also:June, See also:July and See also:August) is 74°, and the range of extremes here for a long See also:period of years ending with 1907 was within 103° and 6° . At See also:Huntingdon, Huntingdon county, in the Juniata Valley, the winter mean is 30°, the summer mean 71 °, and within the period from 1888 to 1907 extremes ranged from 104° to 23° . The summer See also:maxima on the mountains are usually 8° to To° less than in the valleys directly below them; Saegerstown, See also:Crawford county, is nearly 30 M. south of Erie, on Lake Erie, and yet the winter mean is 28° at Erie and only 25° at Saegerstown, and the lowest temperature on See also:record for Erie is -16° while for Saegerstown it is -27° . During the period from 1875 to 1905 inclusive, extremes within the state ranged from 107° at York, York county, in July 1901, to -42° at Smithport, McKean county, in January 1904 . July is the warmest See also:month in all parts of the state . January is the coldest in some and February in others . The See also:average annual rainfall is 44 in . It is 50 in. or more in some regions along the south-east border of the mountain See also:district or farther south-east where the rains are occasionally heavy, and it is less than 40 in. in some of the north-east and south-west counties . The amount of rainfall during the summer is about 3 in. more than that during either autumn or winter and 2 in. more than that during See also:spring . In the mountain region and in the vicinity of Lake Erie there is often a fall of several inches of See also:snow during the winter months and the rapid melting of this produces floods on the Delaware, Susquehanna and Ohio rivers and some of their tributaries . The prevailing winds are See also:westerly, but they are frequently interrupted by warm breezes from the south, or moisture-bearing currents from the east . -, Soils.—The most productive See also:soil is that in the south-east section of the Great Valley and in Chester Valley where it is derived largely from limestone . There is some of the same formation as well as that derived from red shales on the sandstone hills in the south-east province and in many of the middle and western valleys, but often a belt of inferior slate soil adjoins a limestone belt, and many of the ridges are covered with a still more sterile soil derived from white and See also:grey sandstones . The north-west and north-east sections contain some glacial drift but the soil in these parts is not suitable for cultivation except in the larger valleys in the north-west where it is drained by glacial See also:gravel or there is some sandy See also:loam mixed with clay . See also:Agriculture.—Pennsylvania is noted for its See also:mineral See also:wealth and manufactures rather than for its agricultural resources, but in 1900 about two-thirds of its land was included in farms, a little more than two-thirds of its See also:farm-land was improved, and in several crops the state has long ranked high . The number of farms in-creased from 127,577 in 1850 to 224,248 in 1900, the increase resulting in part from a reduction of their See also:size but more largely from the See also:appropriation of new lands for farming purposes . The average size in 1900 was 86.4 acres . Nearly 60 % of them contained less than Too acres and only about 2.7% contained 260 acres or more . More than seven-tenths (160,105) were worked by owners or part owners, and only 34,529 by See also:share tenants, and 23,737 by See also:cash tenants . See also:Hay, See also:Indian See also:corn, See also:wheat, oats, potatoes, fruits, vegetables and See also:tobacco are the principal crops . Of the total See also:crop acreage in 1899 nearly two-fifths was devoted to hay and See also:forage, and the value of the hay crop in 1909 1 (when the crop was 3,742,000 tons, valued at $54,633,000) was greater than that of any other state in the Union except New York . Hay is grown in largest quantities in the north, and in the section south-east of Blue Mountain . More than one-half of the crop acreage in 1899 was devoted to cereals, and of the total cereal acreage 32 % was of wheat, 31.2 % was of Indian corn, 24.8 % was of oats, 6.5 % was of See also:rye, and 5.3 % was of See also:buckwheat . The product of Indian corn was 48,800,000 bushels in 1909; of wheat 26,265,000 bushels; of oats 25,948,000 bushels; of See also:barley 196,000 bushels; of rye 5,508,000 bushels; and of buckwheat 5,665,000 bushels . Indian corn, wheat and rye, are cultivated most extensively in the south-east counties . Some of the larger See also:oat-producing counties also are in the south-east, but most of the buckwheat, barley and oats are grown in the north and west counties . The See also:dairy business, for which much of the hay crop is needed, has grown with the growth of the See also:urban See also:population as is shown in part by a steady increase in the number of dairy cows from 530,224 in 1850 to 1,140,000 in 1910; the value of the dairy products in 1899 ($35,860,110) was exceeded only in New York . The number of other See also:cattle has fluctuated somewhat, but there were 917,000 in 1910 as against 623,722 in 1850 . Horses increased in number 1 See also:Statistics for 1909 and 1910 are from the See also:Year See also:Book of the United States Department of Agriculture . . from 350,398 in 1850 to 619,000 in 1910 . The number of mules increased steadily from 2259 in 1850 to 43,000 in 1910 . The raising of See also:sheep and See also:swine was of considerably less relative importance in 1910 than in 1850, there being 1,882,357 sheep and 1,040,366 swine in 1850 and 1,112,000 sheep and 931,000 swine in 1910 . The dairy business is largest in the regions around Philadelphia and See also:Pittsburg, and in Erie and See also:Bradford counties . Cattle other than dairy cows as well as horses and sheep are most numerous in the western counties, in Bradford county on the north border, and in some of the counties of the south-east . Swine are moist numerous in the south-east and south-west counties . The state ranks high in the See also:production of potatoes, cabbages, See also:lettuce and turnips, and it produces large crops of sweet Indian corn, tomatoes, cucumbers, musk-melons, See also:asparagus and See also:celery . The total value of all vegetables produced in 1899 was $15,832,904, an amount exceeding that of any other state except New York . A large portion of the vegetables are grown in the vicinity of Philadelphia or in the vicinity of Pitts-See also:burg . The culture of tobacco, which was introduced as See also:early as 1689, was a small See also:industry until the middle of the 19th See also:century, but it then developed rapidly except during a brief interruption caused by the Mexican See also:War . In 1909 the crop was 30,732,000 lb . More than two-thirds of the state's crop of 1899 was produced in Lancaster county, which is one of the largest tobacco-producing counties in the United States, and most of the other third was produced in York, Tioga, Bradford and Clinton counties . Apples, cherries and See also:pears are the principal See also:orchard fruits . Grapes, peaches, plums and prunes, apricots, strawberries, raspberries and loganberries, blackberries and dewberries, currants and gooseberries are also grown . Orchard fruits are most abundant south-east of Blue Mountain, and small fruits near the larger cities, but about two-thirds of the grapes are grown in Erie county . Floriculture is an important industry in Philadelphia and its vicinity . The See also:sale of nursery products, more than one-half of which were grown in Chester and Montgomery counties, amounted in 1899 to $541,032, and although this was less than one-third that of New York it was exceeded in only three other states .
Minerals.—Pennsylvania is by far the most important See also:coal-producing state in the Union, and as much of the See also:iron ore of the Lake See also:Superior region is brought to its great bituminous coal-See also:
Extending from the south-west corner of the state through See also:Greene, Washington, Allegheny, See also:Beaver, See also: |