The origin of species by means of natural selectionРипол Классик, 1929 - 454페이지 |
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8 페이지
... never seed! In some few such cases it has been iscovered that very trifling changes, such as a little more or less water at some particular period of growth, will determine whether or not the plant sets a seed. I cannot here enter on ...
... never seed! In some few such cases it has been iscovered that very trifling changes, such as a little more or less water at some particular period of growth, will determine whether or not the plant sets a seed. I cannot here enter on ...
26 페이지
... never less than 20,000 pigeons were taken with the court. 'The monarchs of Iran and Turan sent him some very rare birds'; and, continues the courtly historian, 'His Majesty by crossing“ the breeds, which method was never practised ...
... never less than 20,000 pigeons were taken with the court. 'The monarchs of Iran and Turan sent him some very rare birds'; and, continues the courtly historian, 'His Majesty by crossing“ the breeds, which method was never practised ...
27 페이지
Charles Darwin. laugh you to scorn. I have never met a pigeon, or p0 , or duck, or rabbit fancier, who was not fully convinced that each main breed was descended from a distinct species. Van Mons, in his treatise on pears and a plea ...
Charles Darwin. laugh you to scorn. I have never met a pigeon, or p0 , or duck, or rabbit fancier, who was not fully convinced that each main breed was descended from a distinct species. Van Mons, in his treatise on pears and a plea ...
28 페이지
... never desire to sit, and with the bantam so small and elegant; when we compare the host of agricultural, culinary, orchard, and flowergarden races of plants, most useful to man at difl'erent seasons and for difierent urposes, or so ...
... never desire to sit, and with the bantam so small and elegant; when we compare the host of agricultural, culinary, orchard, and flowergarden races of plants, most useful to man at difl'erent seasons and for difierent urposes, or so ...
31 페이지
... never, the case. The laws of corre ation of growth, the importance of which should never be overlooked, will ensure some differences ; but, as a general rule,l cannot doubt that the continued selection of slight variations, either in ...
... never, the case. The laws of corre ation of growth, the importance of which should never be overlooked, will ensure some differences ; but, as a general rule,l cannot doubt that the continued selection of slight variations, either in ...
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