The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life, 2권D. Appleton, 1896 |
도서 본문에서
29개의 결과 중 1 - 5개
51 페이지
... remains of such infinitely numerous connecting links , it may be objected that time cannot have sufficed for so great an amount of organic change , all changes having been effected slowly . It is hardly possible for me to recall to the ...
... remains of such infinitely numerous connecting links , it may be objected that time cannot have sufficed for so great an amount of organic change , all changes having been effected slowly . It is hardly possible for me to recall to the ...
58 페이지
... remains . Throughout an enormously large proportion of the ocean , the bright blue tint of the water bespeaks its purity . The many cases on record of a formation conformably covered , after an immense interval of time , by another and ...
... remains . Throughout an enormously large proportion of the ocean , the bright blue tint of the water bespeaks its purity . The many cases on record of a formation conformably covered , after an immense interval of time , by another and ...
59 페이지
... remains , without our being able to assign any reason one of the most striking instances is that of the Flysch formation , which consists of shale and sandstone , several thousand , occasionally even six thousand feet in thickness , and ...
... remains , without our being able to assign any reason one of the most striking instances is that of the Flysch formation , which consists of shale and sandstone , several thousand , occasionally even six thousand feet in thickness , and ...
61 페이지
... remains can anywhere be found , though the supply of sediment must for ages have been great , from the enormous degradation of the coast - rocks and from muddy streams entering the sea . The explanation , no doubt , is , that the ...
... remains can anywhere be found , though the supply of sediment must for ages have been great , from the enormous degradation of the coast - rocks and from muddy streams entering the sea . The explanation , no doubt , is , that the ...
62 페이지
... formed over wide spaces during periods of subsidence , but only where the supply of sediment was sufficient to keep the sea shallow and to embed and preserve the remains before they 62 [ CHAP . X. THE POORNESS OF OUR.
... formed over wide spaces during periods of subsidence , but only where the supply of sediment was sufficient to keep the sea shallow and to embed and preserve the remains before they 62 [ CHAP . X. THE POORNESS OF OUR.
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
accumulated adapted admit affinity allied species ancient animals appear Archipelago arctic areas become believe birds breeds Cambrian changes characters classification climate closely allied continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo 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 mammæ mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation palæontologists paleozoic parent parent-form peculiar perfect pistil plants pollen present probably produced quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs seeds Silurian South America species belonging stage stamens sterility structure successive suppose terrestrial tertiary tion variations varieties whilst widely different wings