This Fauna offers, especially in the Old World, an impressive character of power, strength, superior force--I had almost said, _majesty_. In truth, if we do calmly compare the mammals and the birds of tropical America with those which roam the wild plains of Africa, Hindostan, the Indo-Chinese peninsula, and the great islands of the Indian Ocean, we cannot but recognize the evident superiority of the latter. The anthropoid Ape, the enormous Pachyderms, Elephant, Rhinoceros, Hippopotamus, Giraffe, and, among animals of the same order, the Antelopes, many of which attain the dimensions of the Horse, belong exclusively to the Eastern Hemisphere. The genus Camel, represented in Asia by the Bactrian Camel, in Africa by the Dromedary, is but weakly typified in South America by the Lama, the Vicuña, and the Alpaca, not inelegant in form, but of a markedly inferior stature. And what equality is there between the lordly Tiger of the rank Indian jungles, and the sleek, stealthy Jaguar of the American wilderness? Or who will venture to compare the so-called "Lion of America," the Puma or Cougouar, with the regal quadruped which makes the hot Libyan wastes re-echo with his terrible roar? Among the Birds, the Phenicoptera, with its disproportionate legs and neck, distributed over all the ancient continent below 40° of latitude, and the Ostrich, properly so called, are much superior in dimensions to their analogues on the other side of the Atlantic, the American Flamingo and the Nandou. So do the Eagles and Vultures of Europe, Asia, and Africa prevail in numbers and force over those of the New World. And the ancient continent can likewise claim as its own the gigantic Epiornis, the wonderful "Roc Bird" of the well-known Oriental legend, whose petrified eggs and some of whose fossil bones have been discovered in Madagascar. It is true, however, that the greatest of living Raptores, the Condor, inhabits exclusively the Cordillera of the Andes:-- "Stands solitary, stands immovable Upon some highest cliff, and rolls his eye, Clear, constant, unobservant, unabashed, In the cold light, above the dews of morn."--(_W. S. Landor._) But the balance is re-established by the Erpetological and Entomological Fauna of the New World, which can oppose its huge Boas, its Caïmans and Pythons, to the Crocodiles and Gavials of Africa and Asia; its Crotali and Trigonocephali to the Najas of India, the Echidnas of the Cape, and the Cerastes of Egypt and the Sahara; while the Bull Frog of the United States and the Pipa of Guiana are only found on the banks of the vast lonesome swamps of the new continent. As far as the Desert World is concerned, in both hemispheres the legions are innumerable, and their energies commensurate to the greatness of the continual work of destruction and purification which they seem destined to accomplish in all tropical countries.