and drawing it back with the same lightning-like velocity, engulphs his prey. This independence of the eyes is owing to the imperfect sympathy which subsists between the two lobes of the brain and the two sets of nerves which ramify throughout the opposite sides of its frame. Hence also one side of the body may be asleep while the other is vigilant, one may be green while the other is ash-blue, and it is even said that the Chameleon is utterly unable to swim, because the muscles of both sides are incapable of acting in concert. Destined for an arboreal life, he is provided with organs beautifully adapted for supporting himself on the flexible branches; for, besides the cylindrical tail nearly as long as his body which he coils round the boughs, his five toes are united two and three by a common skin, so as to form, as it were, a pair of pincers or a kind of hand, admirably suited for a hold-fast. [Illustration: IGUANA.] Among the _Iguanas_, a huge lizard tribe, characterised by a carinated back and tail, and a large denticulated gular pouch, the common or Great American Guana (_Iguana tuberculata_) deserves particular notice, as its white flesh is considered a great delicacy in Brazil and the West Indies. Notwithstanding its large size, for it not seldom attains a length of four or five feet, and the formidable appearance of its serrated back, it is in reality by no means of a warlike disposition, and so stupid that, instead of endeavouring to save itself by a timely flight, it merely stares with its large eyes, and inflates its pouch, while the noose is passing round its neck to drag it from its hole. The Bahama Islands abound with Guanas, which form a great part of the subsistence of the inhabitants. They are caught by dogs, trained for the purpose, in the hollow rocks and trees where they nestle, and either carried alive for sale to Carolina, or kept for home consumption. They feed wholly on vegetables and food, particularly on a kind of fungus, growing at the roots of trees, and on the fruits of the different kinds of pine apples, whence their flesh most likely acquires its delicate flavour. [Illustration: MONITOR.]