The Origin of Species by Means of Natural Selection,: Or the Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 - 432 páginas |
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Página 90
... Crustaceans have changed greatly . The productions of the land seem to have changed at a quicker rate than those of the sea , of which a striking instance has been observed in Switzerland . There is some reason to believe that organisms ...
... Crustaceans have changed greatly . The productions of the land seem to have changed at a quicker rate than those of the sea , of which a striking instance has been observed in Switzerland . There is some reason to believe that organisms ...
Página 118
... crustaceans , not very high in their own class , might beat cephalopods , the highest molluscs ; and such crustaceans , though not highly developed , would stand very high in the scale of invertebrate animals , if judged by the most ...
... crustaceans , not very high in their own class , might beat cephalopods , the highest molluscs ; and such crustaceans , though not highly developed , would stand very high in the scale of invertebrate animals , if judged by the most ...
Página 131
... crustacea , or echinodermata in common ; but Dr. Günther has recently shown that about thirty per cent . of the fishes are the same on the opposite sides of the isthmus of Panama ; - and this fact has led naturalists to believe that the ...
... crustacea , or echinodermata in common ; but Dr. Günther has recently shown that about thirty per cent . of the fishes are the same on the opposite sides of the isthmus of Panama ; - and this fact has led naturalists to believe that the ...
Página 158
... crustaceans ( as de- scribed in Dana's admirable work ) , some fish and other marine animals , inhabiting the Mediterranean and the seas of Japan , these two areas being now completely separated by the breadth of a whole continent and ...
... crustaceans ( as de- scribed in Dana's admirable work ) , some fish and other marine animals , inhabiting the Mediterranean and the seas of Japan , these two areas being now completely separated by the breadth of a whole continent and ...
Página 164
... crustacea to Great Britain , its antipode , than to any other part of the world . " Sir J. Richardson , also , speaks of the reappearance on the shores of New Zealand , Tasmania , & c . , of northern forms of fish . Dr. Hooker informs ...
... crustacea to Great Britain , its antipode , than to any other part of the world . " Sir J. Richardson , also , speaks of the reappearance on the shores of New Zealand , Tasmania , & c . , of northern forms of fish . Dr. Hooker informs ...
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Términos y frases comunes
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