On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 - 432 páginas |
Dentro del libro
Resultados 6-10 de 51
Página 77
... , and have slowly multiplied , before they invaded the ancient archipelagoes of Europe and the United States . We do not make due allowance for the intervals of time which have elapsed between our CHAP . X. ] IN ANY SINGLE FORMATION . 77.
... , and have slowly multiplied , before they invaded the ancient archipelagoes of Europe and the United States . We do not make due allowance for the intervals of time which have elapsed between our CHAP . X. ] IN ANY SINGLE FORMATION . 77.
Página 83
... 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 progenitors of all the species belonging to the same groups which ...
... 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 progenitors of all the species belonging to the same groups which ...
Página 85
... ancient beds have been quite worn away by denudation , or that their fossils have been wholly ob- literated by metamorphic action , for if this had been the case we should have found only small remnants of the formations next succeeding ...
... ancient beds have been quite worn away by denudation , or that their fossils have been wholly ob- literated by metamorphic action , for if this had been the case we should have found only small remnants of the formations next succeeding ...
Página 89
... ancient forms- On the succession of the same types within the same areas— Summary of preceding and present chapter . LET us now see whether the several facts and laws relating to the geological succession of organic beings accord best ...
... ancient forms- On the succession of the same types within the same areas— Summary of preceding and present chapter . LET us now see whether the several facts and laws relating to the geological succession of organic beings accord best ...
Página 97
... ancient Dinosaurians having become extinct ; as if mere bodily strength gave victory in the battle of life . Mere size , on the contrary , would in some cases determine , as has been remarked by Owen , quicker extermination from the ...
... ancient Dinosaurians having become extinct ; as if mere bodily strength gave victory in the battle of life . Mere size , on the contrary , would in some cases determine , as has been remarked by Owen , quicker extermination from the ...
Otras ediciones - Ver todas
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