as from instinct to habit; or endeavour, upon an inverted process, to arrive from the consideration of effects at causes, as from habit to instinct; or attempt, upon the analysis and analogies of admitted facts in the natural history of one animal, to deduce a theory of the history of another,--we shall find this mysterious but beautiful chain of relation and adaptation unbroken, impassable, perpetual. * * * * * "Observe how this infant colony, of which we are especially speaking, has already been peopled! The majestic rusa, captured in the sultry forests of Bengal, and the elegant gazelle, which has once bounded over the parching deserts of Barbary, have become intimate and make their couch with the white reindeer, brought from the icy wastes of Lapland. The misshapen but harmless kangaroo of New Holland is a fellow-lodger with the ferocious gnu of Southern Africa; and the patient llama, who has left the snowy sides and precipitous defiles of the Andes, contemplates without terror its formidable neighbours, the wolf of the Pyrenees, and the bear of the stupendous mountains of Thibet. In the immediate vicinity of the sacred bull, whose consecrated life has heretofore been passed in luxurious freedom or insolent enjoyment on the banks of the Ganges or the Jumna--feeds the gaunt and shaggy bison, which crops with sullen tranquillity a herbage more nutritious but less grateful to him than he loved to cull among the stony pastures of the Alleghany range, or of the howling solitudes surrounding Hudson's Bay. Though thousands of leagues have interposed between the arid sands from which they have been imported into this peaceful and common home, the camel of the Thebais, as he ruminates in his grassy _parterre_, surveys with composed surprise the wild dog of the Tierra del Fuego and the sharp-eyed dingo of Australia. Around the ghastly sloth-bear, disentombed from his burrows in the gloomiest woods of Mysore or Canara--and his more lively congener of Russia--the armadillo of Brazil and the pine marten of Norway display a vivacity of action and a cheerfulness of gesture which captivity seems powerless to repress. The elephant of Ceylon, and the noble wapiti of the Canadas, repose beneath the same roof; and from his bath, or his pavilion, the Arctic bear contemplates--not his native rocks and solitudes, the crashing of icebergs, and the Polar seas, alternately lashed into terrific fury or hemmed in by accumulating precipices of ice; but--monkeys of almost every size, form, and family, which gambol in the woods of Numidia or Gundwana; in the loftiest trees of Sumatra; on the mountains of Java; by the rivers of Paraguay and Hindustan; of South America and South Asia; among the jungly banks of the Godavery and the woody shores of the Pamoni, of the Oroonoko, and the Bramahputra--in short, in every sunny clime and region where the rigours of his own winter are not only unknown, but inconceivable.