On the Origin of Species by Means of Natural Selection: Or The Preservation of Favored Races in the Struggle for Life, 2권D. Appleton, 1888 - 458페이지 |
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86개의 결과 중 1 - 5개
ii 페이지
... HABITS OF CLIMBING PLANTS . With Illustrations . 12mo . Cloth , $ 1.25 . THE VARIOUS CONTRIVANCES BY WHICH ORCHIDS ARE FERTILIZED BY INSECTS . Revised edition , with Illustrations . 12mo . Cloth , $ 1.75 . THE EFFECTS OF CROSS AND SELF ...
... HABITS OF CLIMBING PLANTS . With Illustrations . 12mo . Cloth , $ 1.25 . THE VARIOUS CONTRIVANCES BY WHICH ORCHIDS ARE FERTILIZED BY INSECTS . Revised edition , with Illustrations . 12mo . Cloth , $ 1.75 . THE EFFECTS OF CROSS AND SELF ...
vi 페이지
... habits of life - Diversified habits in the same species - Species with habits widely different from those of their allies Organs of extreme perfection Modes of transition - Cases of difficulty - Natura non facit saltum - Organs of small ...
... habits of life - Diversified habits in the same species - Species with habits widely different from those of their allies Organs of extreme perfection Modes of transition - Cases of difficulty - Natura non facit saltum - Organs of small ...
vii 페이지
... habits , but different in their origin - Instincts graduated - Aphides and ants - Instincts variable - Domestic in- stincts , their origin — Natural instincts of the cuckoo , molothrus , ostrich , and parasitic bees - Slave - making ...
... habits , but different in their origin - Instincts graduated - Aphides and ants - Instincts variable - Domestic in- stincts , their origin — Natural instincts of the cuckoo , molothrus , ostrich , and parasitic bees - Slave - making ...
xii 페이지
... habits of the Molothrus . On fertile hybrid moths . The discussion on the fertility of hybrids not having been ac- quired through natural selection condensed and modified . On the causes of sterility of hybrids , added to and corrected ...
... habits of the Molothrus . On fertile hybrid moths . The discussion on the fertility of hybrids not having been ac- quired through natural selection condensed and modified . On the causes of sterility of hybrids , added to and corrected ...
xvii 페이지
... habits of life . The work , from its powerful and brilliant style , though displaying in the earlier editions little accurate knowledge and a great want of scientific caution , imme- diately had a very wide circulation . In my opinion ...
... habits of life . The work , from its powerful and brilliant style , though displaying in the earlier editions little accurate knowledge and a great want of scientific caution , imme- diately had a very wide circulation . In my opinion ...
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adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed tend theory tion variability variations varieties vary whilst whole wings young