The Origin of Species by Means of Natural Selection Or, The Preservation of Favored Races in the Struggle for Life |
From inside the book
Results 1-5 of 86
Page xii
... respect to young cuckoos ejecting their foster - brothers confirmed . 268 270 307 240 319 248 215 326 252 377 284 402 301 440 328 343 463 505 516 382 373 518 384 520 385 521 387 541 547 401 405 552 409 568 421 572 424 On the cuckoo ...
... respect to young cuckoos ejecting their foster - brothers confirmed . 268 270 307 240 319 248 215 326 252 377 284 402 301 440 328 343 463 505 516 382 373 518 384 520 385 521 387 541 547 401 405 552 409 568 421 572 424 On the cuckoo ...
Page xiv
... respect to the means of modification , he attributed something to the direct action of the physical conditions of life , something to the crossing of already existing forms , and much to use and disuse , that is , to the effects of ...
... respect to the means of modification , he attributed something to the direct action of the physical conditions of life , something to the crossing of already existing forms , and much to use and disuse , that is , to the effects of ...
Page xxi
... respect , expressed about the year 1859 ( see Prof. Rudolph Wagner , Zoolo- gisch - Anthropologische Untersuchungen , ' 1861 , s . 51 ) his convic- tion , chiefly grounded on the laws of geographical distribution , that forms now ...
... respect , expressed about the year 1859 ( see Prof. Rudolph Wagner , Zoolo- gisch - Anthropologische Untersuchungen , ' 1861 , s . 51 ) his convic- tion , chiefly grounded on the laws of geographical distribution , that forms now ...
Page 5
... directly on the whole organisation or on certain parts alone , and indirectly by affecting the reproductive system . With respect to the direct action , we must bear in mind that in every CHAP . I. 3 Variation under Domestication .
... directly on the whole organisation or on certain parts alone , and indirectly by affecting the reproductive system . With respect to the direct action , we must bear in mind that in every CHAP . I. 3 Variation under Domestication .
Page 7
... respect to what I have called the indirect action of changed conditions , namely , through the reproductive system being affected , we may infer that variability is thus induced , partly from the fact of this system being extremely ...
... respect to what I have called the indirect action of changed conditions , namely , through the reproductive system being affected , we may infer that variability is thus induced , partly from the fact of this system being extremely ...
Other editions - View all
Common terms and phrases
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 formations formerly forms fossil Fritz Müller genera genus geological 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 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 theory tion variability variations varieties vary whilst whole wings young