The inter-tropical, the temperate, and the high northern regions of the globe, are characterised, then, by their own _flora_ and _fauna_; but there is a distribution of organic life exclusive of latitude, which cannot but claim the attention of the naturalist. For example, the marsupial animals are distributed between Australia and central and southern America; but the American forms, very few in number, are essentially distinct from those of Australia. Again, it is to the warmer regions of the old world that the larger pachydermatous animals are confined, such as several species of rhinoceros, the hippopotamus, a tapir, two species of elephant, wild equine animals, as the dziggetai, wild ass, quagga, zebra, etc., and various species of wild hog. The living indigenous pachydermata of America consist of two species of tapir, and two of peccary. On the contrary, America is rich in the edentata, namely, sloths, ant-eaters, armadilloes, etc. The pangolins, however, (_manis_,) are found only in the warmer parts of the old world, and the aard-vark (_orycteropus_) is a native of South Africa. We might enlarge greatly upon these observations, and extend them to birds and reptiles, etc., were it our design to enter upon the question; we shall only add, that in all regions animals are expressly suited to the climate of the countries in which they respectively live; they are constituted for the endurance either of heat or of cold, for self-protection against all extremes of atmospheric temperature, and for the enjoyment of existence, some under the equinoctial line, others within the arctic circle.