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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84개의 결과 중 1 - 5개
xi 페이지
... become somewhat stronger or weaker . The more important corrections and some additions in the pre- sent volume are tabulated on the following page , for the convenience of those interested in the subject , and who possess the fifth ...
... become somewhat stronger or weaker . The more important corrections and some additions in the pre- sent volume are tabulated on the following page , for the convenience of those interested in the subject , and who possess the fifth ...
xv 페이지
... become the most prevalent , if not the only race , in the particular country in which it had originated . " He then extends these same views to the white inhabitants of colder climates . I am indebted to Mr. Rowley , of the United ...
... become the most prevalent , if not the only race , in the particular country in which it had originated . " He then extends these same views to the white inhabitants of colder climates . I am indebted to Mr. Rowley , of the United ...
xvi 페이지
... become improved in the course of modification . This same view was given in his 55th Lecture , published in the ' Lancet ' in 1834 . In 1831 Mr. Patrick Matthew published his work on ' Naval Timber and Arboriculture , ' in which he ...
... become improved in the course of modification . This same view was given in his 55th Lecture , published in the ' Lancet ' in 1834 . In 1831 Mr. Patrick Matthew published his work on ' Naval Timber and Arboriculture , ' in which he ...
xvii 페이지
... become adapted to its peculiar habits of life . The work , from its powerful and brilliant style , though displaying ... becoming of living things . " Farther on ( p . xc . ) , after referring to geographical distri- bution , he adds ...
... become adapted to its peculiar habits of life . The work , from its powerful and brilliant style , though displaying ... becoming of living things . " Farther on ( p . xc . ) , after referring to geographical distri- bution , he adds ...
17 페이지
... become extinct in the wild state . But birds breeding on precipices , and good fliers , are unlikely to be exterminated ; and the common rock- pigeon , which has the same habits with the domestic breeds , has not been exterminated even ...
... become extinct in the wild state . But birds breeding on precipices , and good fliers , are unlikely to be exterminated ; and the common rock- pigeon , which has the same habits with the domestic breeds , has not been exterminated even ...
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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