The orgin of speciesAMS Press, 1972 |
From inside the book
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Page 83
... probably differed greatly from any known animal . Some of the most ancient animals , as the Nautilus , Lingula , & c . , do not differ much from living species ; and it cannot on our theory be supposed , that these old species were the ...
... probably differed greatly from any known animal . Some of the most ancient animals , as the Nautilus , Lingula , & c . , do not differ much from living species ; and it cannot on our theory be supposed , that these old species were the ...
Page 221
... probably in these cases often come into play ; that is , the members of the same class , although only distantly allied , have inherited so much in common in their constitution , that they are apt to vary under similar exciting causes ...
... probably in these cases often come into play ; that is , the members of the same class , although only distantly allied , have inherited so much in common in their constitution , that they are apt to vary under similar exciting causes ...
Page 275
... probably be more variability in the forms of life ; during periods of subsidence , more extinction . With respect to the absence of strata rich in fossils beneath the Cambrian formation , I can recur only to the hypothesis given in the ...
... probably be more variability in the forms of life ; during periods of subsidence , more extinction . With respect to the absence of strata rich in fossils beneath the Cambrian formation , I can recur only to the hypothesis given in the ...
Common terms and phrases
accumulated adapted admit affinity allied species ancient animals appear Archipelago arctic areas become believe birds breeds Cambrian changes characters classification climate closely allied common progenitor 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 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