The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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Page 55
... occurs under two distinct forms ; one of these has strong and differently shaped pincers , and the other has antennæ much more abundantly fur- nished with smelling - hairs . Although in most of these cases , the two or three forms ...
... occurs under two distinct forms ; one of these has strong and differently shaped pincers , and the other has antennæ much more abundantly fur- nished with smelling - hairs . Although in most of these cases , the two or three forms ...
Page 60
... likewise necessarily occurs with closely allied organisms , which inhabit distinct conti- nents or islands . When , on the other hand , an animal or plant ranges over the same continent , or inhabits 60 [ CHAP . II . DOUBTFUL SPECIES .
... likewise necessarily occurs with closely allied organisms , which inhabit distinct conti- nents or islands . When , on the other hand , an animal or plant ranges over the same continent , or inhabits 60 [ CHAP . II . DOUBTFUL SPECIES .
Page 69
... occur in a group having many species , than in one hav- ing few . To test the truth of this anticipation I have arranged the plants of twelve countries , and the coleopterous insects of two districts , into two nearly equal masses , the ...
... occur in a group having many species , than in one hav- ing few . To test the truth of this anticipation I have arranged the plants of twelve countries , and the coleopterous insects of two districts , into two nearly equal masses , the ...
Page 86
... occur with our game animals - often ensue ; and here we have a limiting check independent of the struggle for life . But even some of these so - called epidemics appear to be due to parasitic worms , which have from some cause ...
... occur with our game animals - often ensue ; and here we have a limiting check independent of the struggle for life . But even some of these so - called epidemics appear to be due to parasitic worms , which have from some cause ...
Page 97
... occurring in our domestic productions , and , in a lesser degree , in those under nature , be borne in mind ; as well as the strength of the hereditary tendency . Under domestication , it may be truly said that the whole or- ganisation ...
... occurring in our domestic productions , and , in a lesser degree , in those under nature , be borne in mind ; as well as the strength of the hereditary tendency . Under domestication , it may be truly said that the whole or- ganisation ...
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young