Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1875 - 384 pages |
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Page xv
... produced by Varia- tion and Selection - The Objection that there are Limits to Variation -Objection to the argument from Classification - The Times on Natural Selection - Intermediate or generalized forms of Extinct Animals an ...
... produced by Varia- tion and Selection - The Objection that there are Limits to Variation -Objection to the argument from Classification - The Times on Natural Selection - Intermediate or generalized forms of Extinct Animals an ...
Page 7
... from the immense number of species which have served as antitypes for the existing spe- cies , and thus produced a complicated branching of the lines of affinity , as intricate as the twigs THE INTRODUCTION OF NEW SPECIES .
... from the immense number of species which have served as antitypes for the existing spe- cies , and thus produced a complicated branching of the lines of affinity , as intricate as the twigs THE INTRODUCTION OF NEW SPECIES .
Page 9
... producing several representative or analogous groups . The Sylviadæ of Europe and the Sylvicolidæ of North America , the Heliconidæ of South America and the Euplœas of the East , the group of Tro- gons inhabiting Asia , and that ...
... producing several representative or analogous groups . The Sylviadæ of Europe and the Sylvicolidæ of North America , the Heliconidæ of South America and the Euplœas of the East , the group of Tro- gons inhabiting Asia , and that ...
Page 24
... steps by which limbs have been formed ; and that most rudimentary organs have been produced by abortion , owing to disuse , as explained by Mr. Darwin . of them , had we a view of all the 24 ON THE LAW WHICH HAS REGULATED.
... steps by which limbs have been formed ; and that most rudimentary organs have been produced by abortion , owing to disuse , as explained by Mr. Darwin . of them , had we a view of all the 24 ON THE LAW WHICH HAS REGULATED.
Page 26
... produced in a state of domesticity are more or less unstable , and often have a tendency , if left to themselves , to return to the normal form of the parent species ; and this insta- bility is considered to be a distinctive peculiarity ...
... produced in a state of domesticity are more or less unstable , and often have a tendency , if left to themselves , to return to the normal form of the parent species ; and this insta- bility is considered to be a distinctive peculiarity ...
Other editions - View all
Contributions to the Theory of Natural Selection: A Series of Essays ... Alfred Russel Wallace No preview available - 2018 |
Contributions to the Theory of Natural Selection: A Series of Essays Alfred Russel Wallace No preview available - 2016 |
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abundant adapted affinity animals antennæ antitypes appear beauty become beetles believe birds Borneo brain build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous Crown 8vo curious Danaidæ Darwin Diphilus distinct earth Edition eggs epoch essay exactly example existence explained extinct facts faculties favourable flowers genera genus geological geological periods groups habits Heliconidæ Illustrations imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male mimic mimicry mode modifications Moluccas moths natural selection nectary nest never nidification number of species observations occur Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar period phenomena physical Polydorus possess present probably produced Professor protection race regions remarkable render resemble savage Science sexes sexual selection shown structure Sumatra tail theory of natural Theseus tints tion TREATISE trees tropical University variation varied varieties whole wings
Popular passages
Page 361 - But the passage from the physics of the brain to the corresponding facts of consciousness is unthinkable. Granted that a definite thought and a definite molecular action in the brain occur simultaneously; we do not possess the intellectual organ, nor apparently any rudiment of the organ, which would enable us to pass, by a process of reasoning, from the one to the other.
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Page 326 - natural selection' himself, but he is actually able to take away some of that power from nature which, before his appearance, she universally exercised. We can anticipate the time when the earth will produce only cultivated plants and domestic animals ; when man's selection shall have supplanted
Page 8 - The book will doubtless find a place in the library, not only of the scientific geologist, but also of all who are desirous of the industrial progress and commercial prosperity of the Acadian provinces.