On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 - Всего страниц: 432 |
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Стр. vi
... ancient forms— On the succession of the same types within the same areas— Summary of preceding and present chapter · Page 89 CHAPTER XII . GEOGRAPHICAL DISTRIBUTION . Present distribution cannot be accounted for by differences in ...
... ancient forms— On the succession of the same types within the same areas— Summary of preceding and present chapter · Page 89 CHAPTER XII . GEOGRAPHICAL DISTRIBUTION . Present distribution cannot be accounted for by differences in ...
Стр. 51
... ancient forms ; and so on backwards , always converging to the common ancestor of each great class . So that the number of intermediate and transitional links , between all living and extinct spe- cies , must have been inconceivably ...
... ancient forms ; and so on backwards , always converging to the common ancestor of each great class . So that the number of intermediate and transitional links , between all living and extinct spe- cies , must have been inconceivably ...
Стр. 53
... ancient sea- coasts , cannot have been thus formed , for each line . is composed of one and the same formation , whilst our sea - cliffs are everywhere formed by the intersection of various formations . This being the case , we are ...
... ancient sea- coasts , cannot have been thus formed , for each line . is composed of one and the same formation , whilst our sea - cliffs are everywhere formed by the intersection of various formations . This being the case , we are ...
Стр. 62
... ancient forma- tions , which are throughout the greater part of their thickness rich in fossils , have thus been formed during subsidence . Since publishing my views on this subject in 1845 , I have watched the progress of Geology , and ...
... ancient forma- tions , which are throughout the greater part of their thickness rich in fossils , have thus been formed during subsidence . Since publishing my views on this subject in 1845 , I have watched the progress of Geology , and ...
Стр. 76
... ancient homes , as they would differ from their former state in a nearly uniform , though perhaps extremely slight degree , and as they would be found embedded in slightly different sub - stages of the same formation , they would ...
... ancient homes , as they would differ from their former state in a nearly uniform , though perhaps extremely slight degree , and as they would be found embedded in slightly different sub - stages of the same formation , they would ...
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admit affinity allied species ancient animals appear Archipelago arctic areas become believe birds Cambrian changes characters cies classification climate closely allied common progenitor continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo eral Europe existing extinct fact faunas fertilised fertility flowers formations formerly forms fossil fresh-water Fritz Müller Gärtner genera genus geological period geological record Glacial period groups of species habits hybrids hybrids produced important individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation parent parent-form peculiar perfect pistil plants pollen present probably produced quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs sediment seeds Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory tion variations varieties whilst widely different wings