The Descent of Man (Unabridged)

3. 1
4. The Descent of Man, and Selection in Relation to Sex
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3. 2
4. Introduction
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3. 3
4. Part 1. Chapter 1
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4. Embryonic Development. – Man is developed from an…
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4. The extrinsic muscles which serve to move the external…
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4. The sense of smell is of the highest importance…
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4. There is another foramen or perforation in the humerus…
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4. Chapter 2
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4. The direct and definite action of changed conditions.
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4. The Quechua Indians inhabit the lofty plateaux of Peru…
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4. Professor Canestrini, after discussing the foregoing…
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4. Correlated Variation. – In man, as in the lower animals…
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4. Natural Selection. – We have now seen that man…
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4. Turning now to the nearest allies of men…
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4. As the various mental faculties gradually developed…
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4. According to a popular impression, the absence of a tail…
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4. It is, as I can now see, probable that all organic beings…
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4. Chapter 3
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4. Although, as we learn from the above-mentioned insects…
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4. Most of the more complex emotions are common to the…
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4. Of all the faculties of the human mind, it will, I presume…
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3. 22
4. The following cases relate to dogs.
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4. The Duke of Argyll remarks, that the fashioning of an…
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4. As Horne Took, one of the founders of the noble science…
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4. The formation of different languages and of distinct…
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4. Belief in God – Religion. – There is no evidence that man…
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4. Chapter 4
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4. It is certain that associated animals have a feeling of love…
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4. It has often been assumed that animals were…
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4. The social animals which stand at the bottom of the scale…
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4. A man cannot prevent past impressions often repassing…
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4. If any desire or instinct leading to an action opposed to…
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4. Concluding Remarks. – It was assumed formerly by…
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4. Our great philosopher, Herbert Spencer, has recently…
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4. Chapter 5
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4. Although the circumstances, leading to an increase in…
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3. 37
4. The aid which we feel impelled to give to the helpless is…
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4. A most important obstacle in civilised countries to an…
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4. The remarkable success of the English as colonists…
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4. Chapter 6
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4. The greater number of naturalists who have taken into…
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4. Although, as we have now seen, man has no just right…
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4. On the Birthplace and Antiquity of Man.
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4. Lastly, one single member of the immense and diversified…
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4. The possession by male mammals of functionally…
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4. Chapter 7
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4. In determining whether the supposed varieties of…
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4. On the other side of the question, if our supposed…
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4. During an early stage in the divergence of the races of…
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4. As it is improbable that the numerous and unimportant…
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4. Extinction follows chiefly from the competition of tribe…
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4. The decrease of the native population of the Sandwich…
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4. Lessened fertility from changed conditions, as in the case…
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4. Finally, although the gradual decrease and ultimate…
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4. We have seen in the second chapter that the conditions…
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4. Note on the Resemblances and Differences in…
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4. It is further established, that the degree of asymmetry of…
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3. 58
4. Three views of this brain are given in the work cited…
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4. Part 2. Chapter 8
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4. Just as man can improve the breed of his game-cocks by…
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4. Numerical Proportion of the Two Sexes.
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4. As I hear from Sir Andrew Smith, the lion in South Africa…
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4. The female, on the other hand, with the rarest exceptions…
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4. From the causes just specified the two sexes can hardly…
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4. Laws of Inheritance.
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4. There is one difficult question which it will be convenient…
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4. In most of the species of the splendid family of the…
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4. Summary and concluding remarks. – From the foregoing…
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4. Professor Faye remarks that 'a still greater preponderance…'
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4. Of mammalia in a state of nature I have been able to…
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4. Insects.
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4. Mr Doubleday has called my attention to M. Staudinger's…
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4. Some of the lower Crustaceans are able to propagate…
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4. In the Sandwich Islands, the males exceed the females…
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4. Chapter 9
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4. Even in the highest class of the Mollusca…
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4. In some of the lower crustaceans, the right anterior…
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4. Class, Arachnida (Spiders). – The sexes do not generally…
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4. Chapter 10
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4. There are, however, exceptions to the rule of male insects…
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4. Order, Orthoptera (Crickets and Grasshoppers).
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4. From the facts now given, we see that the means by…
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3. 83
4. In the family of Bees, especially in the solitary species…
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4. The cases hitherto given refer to the Lamellicorns…
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4. We thus see that in the different coleopterous families…
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3. 86
4. Chapter 11
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4. In the genus Papilio, all the species of the Æneas group…
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3. 88
4. Most Moths rest motionless during the whole or greater…
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4. The courtship of butterflies is, as before remarked…
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4. On the whole, although many serious objections may be…
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4. As some writers have felt much difficulty in…
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3. 92
4. The colouring of insects is a complex and obscure subject.
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4. Chapter 12
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4. In many species the male alone is ornamented with…
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4. To return to our more immediate subject. The case stands…
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4. In most of the Lophobranchii (Pipe-fish, Hippocampi, &c.)…
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4. Reptiles. Chelonia. – Tortoises and turtles do not offer…
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4. Lacertilia. – The males of some, probably of many kinds of…
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4. Chapter 13
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4. The males of many gallinaceous birds, especially of the…
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4. Vocal and instrumental music. – With birds the voice…
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4. In some birds the vocal organs differ greatly in the two…
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4. In the foregoing cases sounds are made by the aid of…
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4. Decoration. – I will first discuss the cases in which…
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4. I will mention only one other bird, remarkable from the…
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3. 106
4. It appears at first sight a surprising circumstance that…
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4. The Gold and Amherst pheasants during their courtship…
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4. We will now turn to male birds which are not…
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4. Chapter 14
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3. 110
4. Sir J. Lubbock's gamekeeper has repeatedly shot…
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3. 111
4. Birds possess acute powers of observation. Every mated…
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3. 112
4. The Rev. W. D. Fox informs me that he possessed at the…
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3. 113
4. Wild turkeys in the United States, according to Audubon…
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3. 114
4. Variability of Birds, and especially of their Secondary…
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3. 115
4. Whether or not unimportant differences between…
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3. 116
4. Gradation of Secondary Sexual Characters. – Cases of…
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4. Argus pheasant. – Another excellent case for investigation…
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4. There still remains another very curious point…
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4. Chapter 15
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4. As bright colours are of service to the males in their rivalry…
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4. In these two latter cases the great length of the…
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3. 122
4. Notwithstanding the foregoing objections, I cannot doubt…
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3. 123
4. The cases, as yet given, of slight and graduated…
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3. 124
4. The laws of inheritance can alone account for the…
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3. 125
4. Chapter 16
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3. 126
4. The force of the present law is well shewn in those…
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3. 127
4. As I account so largely by sexual selection for the…
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3. 128
4. Formerly when I was inclined to lay much stress on…
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3. 129
4. Turning now to the Ostrich order: the male of the…
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4. CLASS IV. When the adult male resembles the adult…
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4. With birds it is difficult to decide by what standard we…
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4. In Aïthurus polytmus, a humming-bird, the male is…
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3. 133
4. In all parts of the world both sexes of many soft-billed…
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4. Some members of the heron family offer a still more…
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4. The laws of inheritance, irrespectively of selection, appear…
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3. 136
4. Chapter 17
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4. The horns of the reindeer are developed at a most…
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3. 138
4. The effects of castration deserve notice, as throwing light…
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3. 139
4. With antelopes it is sometimes difficult to imagine how…
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3. 140
4. Very few male quadrupeds possess weapons of two…
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3. 141
4. The males of some few quadrupeds possess organs or…
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3. 142
4. Choice in Pairing by either Sex of Quadrupeds.
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4. Chapter 18
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4. The rank effluvium of the male goat is well known…
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3. 145
4. Colour of the Hair and of the Naked Skin. – I will first give…
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3. 146
4. Lastly, in the baboon family, the adult male of…
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3. 147
4. Equal transmission of ornamental characters to both sexes.
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3. 148
4. We have seen in a former chapter that when young…
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3. 149
4. A few instances will suffice of the strange manner in…
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4. Part 3. Chapter 19
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4. Throughout the great American continent the men may…
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3. 152
4. Now, when two men are put into competition, or a man…
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3. 153
4. A critic has asked how the ears of man, and he ought to…
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3. 154
4. As the males of several quadrumanous animals have their…
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3. 155
4. In most, but not all parts of the world, the men are more…
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3. 156
4. It is remarkable that throughout the world the races…
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3. 157
4. Chapter 20
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3. 158
4. The indirect evidence in favour of the belief of the former…
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3. 159
4. Infanticide. – This practice is now very common…
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3. 160
4. The Manner of Action of Sexual Selection with Mankind.
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3. 161
4. Turning to Africa: the Kafirs buy their wives, and girls are…
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3. 162
4. With respect to the beard in man, if we turn to our best…
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3. 163
4. Chapter 21
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3. 164
4. The high standard of our intellectual powers and moral…
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3. 165
4. He who believes in the advancement of man from some…
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3. 166
4. Although we have some positive evidence that birds…
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