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					  circumstances they have been discovered, we shall see 
					that there is but little hope of ever finding those that 
					we have only seen as fossils. 
					 Islands of moderate extent, situated at a distance 
					from extensive continents, have very few quadrupeds, 
					and those very small; when they have large ones, it is 
					because they have been brought from elsewhere. 
					Bougainville and Cook found only dogs and hogs on 
					the South Sea Islands; and the largest species of the 
					West India Islands was the agouti. 
					 In fact, large territories, such as Asia, Africa, the 
					two Americas, and New Holland, have large 
					quadrupeds, and generally, species peculiar to each of 
					them; so that wherever it has been found that the 
					situation of these lands has kept them isolated from the 
					rest of the world, a class of quadrupeds has been there 
					found entirely different from any elsewhere existing. 
					Thus, when the Spaniards first overran South America, 
					they did not find one of the quadrupeds common to 
					Europe, Asia, or Africa. The puma, the jaguar, the 
					tapir, the cabiai, the lama, the vicuna, sloths, 
					armadilloes, opossurns, and all the species of monkeys, 
					were to them entirely strange, and beings of which 
					they had no idea. The same phenomenon occurred in 
					our time, when the first survey of the coast of New 
					Holland and the adjacent islands took place. The 
					different kangaroos, phascolomys, dasyurus, and 
					perameles, the flying phalangers, the ornithorynchi, 
					and echidnæ, have been found to astonish naturalists 
					by their strange conformations, which broke through 
					all rules and overthrew all systems. 
					 If then there remained any extensive continent to 
					discover, we might hope to find new species, amongst 
					which some might be found more or less 
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