The origin of species by means of natural selectionРипол Классик, 1929 - 454페이지 |
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64개의 결과 중 1 - 5개
7 페이지
... diflerent climates and treatment, I ink we are driven to conclude that this great variability is simply due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat difl'erent from, those ...
... diflerent climates and treatment, I ink we are driven to conclude that this great variability is simply due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat difl'erent from, those ...
9 페이지
... difl'erent character from that of the rest of the plant. Such buds can be propagated by grafting, etc., and sometimes by seed. l'hese 'sports' are extremely rare under nature, but far from rare under cultivation ; and in this case we ...
... difl'erent character from that of the rest of the plant. Such buds can be propagated by grafting, etc., and sometimes by seed. l'hese 'sports' are extremely rare under nature, but far from rare under cultivation ; and in this case we ...
16 페이지
... difl'erent quarters of the world. I do not believe, as we shall presently see, that the whole amount of difference between' the several breeds of the dog has been produced under domestication ;I believe that some small part of the ...
... difl'erent quarters of the world. I do not believe, as we shall presently see, that the whole amount of difference between' the several breeds of the dog has been produced under domestication ;I believe that some small part of the ...
19 페이지
... difl'erent languages have been published on pigeons, and some of them are very important, as being of considerable ... difl'erences in their skulls. The carrier, more especially the male bird, is also remarkable from the wonderful ...
... difl'erent languages have been published on pigeons, and some of them are very important, as being of considerable ... difl'erences in their skulls. The carrier, more especially the male bird, is also remarkable from the wonderful ...
28 페이지
... different ways ; when we com o the game-cock, so pertinacious in battle, with ot er breeds so little quarrelsome, with ... difl'erent seasons and for difierent urposes, or so beautiful in his eyes, we must, I think, look further than to ...
... different ways ; when we com o the game-cock, so pertinacious in battle, with ot er breeds so little quarrelsome, with ... difl'erent seasons and for difierent urposes, or so beautiful in his eyes, we must, I think, look further than to ...
목차
5 | |
ON was GEOLOGICAL SUCCESSION OF ORGANIC | 155 |
GEOGRAPHICAL DISTRIBUTION | 282 |
Gnoonnmcu DISTRIBUTION Continued | 302 |
RECAPITULATION AND CONCLUSION | 415 |
41 | 449 |
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자주 나오는 단어 및 구문
action adapted advantage allied America amount ancient animals appear become believe birds breeds cause characters climate closely common considered continuous crossed descendants difl'erent distinct domestic doubt evidence existing extinct extremely facts families favourable fertility find first flowers follow formations forms genera genus give given greater groups habits hand Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate islands kind known land laws less lines living look males manner means migration modification namely natural selection naturalists nearly never observed occur organic origin parent perfect period plants points present principle probably produced range ranked reason regions remains remarked resemble seeds seems seen separated shown single slight sometimes species sterility structure struggle successive suppose tend theory tion trees variability variations varieties vary whole widely