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See also:ROME (See also:Roma)
, the See also:capital of the See also:modern See also:kingdom of See also:Italy, in' the See also:province of See also:Rome, on the See also:river See also:Tiber, r7 See also:miles N.E. from its mouth on the Mediterranean
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As formerly the centre of the See also:ancient See also:Roman See also:republic and of the Roman See also:empire, and the headquarters of the See also:Christian See also: The volcanic ashes and sand of which the tufa is composed appear in parts to See also:lie just as they were showered down from the See also:crater; in that See also:case it shows but little sign of, stratification, and consists wholly of igneous products . In parts See also:time and pressure have See also:bound together these scoriae into a soft and friable rock; in other places they still lie in loose sandy beds and can be dug out with the See also:spade . Other masses of tufa again show signs either of having been deposited in water, or else washed away from their first resting-See also:place and redeposited with visible stratifications; this is shown by the .water-worn pebbles and chips of limestone rock, which See also:form a See also:conglomerate bound together by the volcanic ashes into a sort of natural See also:cement . A third variety is that which exists on the See also:Palatine Hill . Here the shower of 'red-hot ashes has evidently fallen on a thickly growing See also:forest, and the burning See also:wood, partly smothered by the ashes, has been converted into See also:charcoal, large masses of which are embedded in the tufa rock . In some places charred branches of trees, their form well preserved, can be easily distinguished, . The so-called " See also:wall of See also:Romulus ". is built of this conglomerate of tufa and charred wood; a veryperfect See also:section of the See also:branch of a See also:tree is visible on one Of" the blocks by the ScalaeCaci . So great have been the See also:physical changes in the site of Rome since the first See also:dawn of the historic period that it is difficult now to realize what its aspect once was . The See also:Forum Romanum, the Velabrum, the great Campus Martins (now the most crowded See also:part of modern Rome), and other valleys were once almost impassable marshes or pools of water (Ov . See also:Fasti, V . 401; Dionys. ii . 5o) . The draining of these valleys was effected by means of the great cloacae, which were among the earliest important architectural See also:works of Rome (See also:Varro, See also:Ling . See also:Lat. iv . 149) . Again, the various hills and ridges were once more numerous and very much more abrupt than they are now . At an See also:early period, when each hill was crowned by a See also:separate See also:village fort, the great See also:object of the inhabitants was to increase the steepness of its cliffs and render See also:access difficult . At a later time, when Rome was See also:united under one See also:government, the very 'physical peculiarities which had originally made its hills so populous, through their natural adaptability for See also:defence, became extremely inconvenient in a united city, where architectural symmetry and splendour were above all things aimed at . Hence the most gigantic See also:engineering works' were undertaken: tops of hills were levelled, whole ridges cut away, and See also:gentle slopes formed in the place of abrupt cliffs . The levelling of the See also:Velia and the ekcavation of the site forTrajan's forum are instances of this . The same works were' continued in the See also:middle ages, as when in the 14th See also:century an access was made to the Capitoline Arx 1 from the See also:side of the Campus See also:Martius; up to that time a steep cliff had prevented all approach except from the side of the Forum . Finally, after Rome had become the capital of united Italy, the last See also:quarter of the 19th century, an extensive government See also:plan (piano regulatore) was gradually carried out, with the 'object of reducing hills and valley to a See also:uniform level and constructing wide boulevards on the chessboard method of a modern See also:American city . The See also:constant fires which have at times devastated Rome have been a powerful See also:agent in obliterating the natural See also:contour of the ground; and the accumulated rubbish from this and other causes has in some plates overlaid' the ground to a See also:depth of 4o ft., notably in the valleys . |
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