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Ibis, white, change of colour of naked skin in, during the breeding season; scarlet, young of the. Ibis tantalus, age of mature plumage in; breeding in immature plumage. Ibises, decomposed feathers in; white; and black. Ichneumonidae, difference of the sexes in. Ichthyopterygia. Ichthyosaurians.
Huxley, T.H., on the structural agreement of man with the apes; on the agreement of the brain in man with that of lower animals; on the adult age of the orang; on the embryonic development of man; on the origin of man; on variation in the skulls of the natives of Australia; on the abductor of the fifth metatarsal in apes; on the nature of the reasoning power; on the position of man; on the suborders of primates; on the Lemuridae; on the Dinosauria; on the amphibian affinities of the Ichthyosaurians; on variability of the skull in certain races of man; on the races of man; Supplement on the brain.
Lastly: Is there any reason to believe that the Ichthyosaurians are descendants of the Sauroid fishes which preceded the appearance of these reptiles? Not the least. I should consider any naturalist who would seriously present the question in this light as incapable of discussing it or judging it. He would place himself outside of the facts and would reason from a basis of his own creating. . .
I believe you will say, NO. At any rate, the facts of geology lend no support to such a view, for the nobler forms of Reptile appear in strata below those in which the Ichthyosaurians, etc., are first seen. But I must not trouble you with more questions. Professor Whewell is now Master of Trinity College. We shall all rejoice to see you.
Owen, Prof., on the Corpora Wolffiana; on the great toe in man; on the nictitating membrane and semilunar fold; on the development of the posterior molars in different races of man; on the length of the caecum in the Koala; on the coccygeal vertebrae; on rudimentary structures belonging to the reproductive system; on abnormal conditions of the human uterus; on the number of digits in the Ichthyopterygia; on the canine teeth in man; on the walking of the chimpanzee and orang; on the mastoid processes in the higher apes; on the hairiness of elephants in elevated districts; on the caudal vertebrae of monkeys; classification of mammalia; on the hair in monkeys; on the piscine affinities of the Ichthyosaurians; on polygamy and monogamy among the antelopes; on the horns of Antilocapra Americana; on the musky odour of crocodiles during the breeding season; on the scent-glands of snakes; on the Dugong, Cachalot, and Ornithorhynchus; on the antlers of the red deer; on the dentition of the Camelidae; on the horns of the Irish elk; on the voice of the giraffe, porcupine, and stag; on the laryngeal sac of the gorilla and orang; on the odoriferous glands of mammals; on the effects of emasculation on the vocal organs of men; on the voice of Hylobates agilis; on American monogamous monkeys.
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