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I am greatly indebted to the kindness of Mr. Sclater for having looked over these four chapters on birds, and the two following ones on mammals. In this way I have been saved from making mistakes about the names of the species, and from stating anything as a fact which is known to this distinguished naturalist to be erroneous.
With mammals true horns are always supported on the frontal bones, but with birds various bones have been modified for this purpose; and in species of the same group the protuberances may have cores of bone, or be quite destitute of them, with intermediate gradations connecting these two extremes. Hence, as Dr.
No one has yet entered the country in either capacity, but, from what has been told me before the War by intelligent Turkish officers who campaigned there, I think that the birds and smaller mammals would repay research, while the great Dawasir valley and other geographical problems inland might be investigated with advantage under the ægis of local chiefs.
Virchow confined himself to the most careful analysis of large numbers of human skulls and those of anthropoid mammals. He saw only the differences between them, and sought to express these in figures. Without adducing a single solid reason, or offering any alternative explanation, he rejected evolution as an unproved hypothesis.
These muscles were very useful to our ancestors, but are of no consequence to us. This applies to most of the anthropoid apes as well. The lower apes have pointed ears, without folded border or lobe, like the other mammals. But Darwin has shown that at the upper part of the folded border there is in many men a small pointed process, which most of us do not possess.
On the hair in Hylobates, see 'Natural History of Mammals, by C.L. Martin, 1841, p. 415. Also, Isidore Geoffroy on the American monkeys and other kinds, 'Hist. Nat. Gen. vol. ii. 1859, pp. 216, 243. Eschricht, ibid. s. 46, 55, 61. Owen, 'Anatomy of Vertebrates, vol. iii. p. 619.
The formless mass in the next chair which Mr. Twist had taken for inanimate matter, probably cushions and wraps, and now perceived was one of the higher mammals, put out a hand and said something, at least, it opened that part of its face which is called a mouth but which to Mr.
If any of my readers hunger and thirst for information concerning the descent of the cat through marsupial ancestors and mesozoic mammals to the generalized placental or monodelphous carnivora of to-day, let them consult St.
The male fights for the female, but he does not seek to win her by delicate attentions. If there are any exceptions to this rule, I do not know them. There seems to be among the birds something that is like what is called romantic love. The choice of mate seems always to rest with the female, while among the mammals the female shows no preference at all.
The different orders of insects in Madeira apparently present analogous facts. Oceanic islands are sometimes deficient in certain classes, and their places are apparently occupied by the other inhabitants; in the Galapagos Islands reptiles, and in New Zealand gigantic wingless birds, take the place of mammals. In the plants of the Galapagos Islands, Dr.
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