Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1870 - 384 pages |
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Page 2
... epoch , the change of organic life has been gradual : the first appearance of animals now existing can in many cases be traced , their numbers gradually increasing in the more re- cent formations , while other species continually die ...
... epoch , the change of organic life has been gradual : the first appearance of animals now existing can in many cases be traced , their numbers gradually increasing in the more re- cent formations , while other species continually die ...
Page 3
... epoch to another . Now , taking this as a fair statement of the results . of geological inquiry , we see that the present geo- graphical distribution of life upon the earth must be the result of all the previous changes , both of the ...
... epoch to another . Now , taking this as a fair statement of the results . of geological inquiry , we see that the present geo- graphical distribution of life upon the earth must be the result of all the previous changes , both of the ...
Page 11
... epoch , and may have become submerged as the volcanic ranges of Java and Sumatra were elevated . The organic results we sce in the very considerable number of species of animals common to some or all of these countries , while at the ...
... epoch , and may have become submerged as the volcanic ranges of Java and Sumatra were elevated . The organic results we sce in the very considerable number of species of animals common to some or all of these countries , while at the ...
Page 14
... epoch , may , it is hoped , be consi- dered as one step in the right direction towards a complete solution of it . High Organization of very ancient Animals consistent with this Law . Much discussion has of late years taken place on the ...
... epoch , may , it is hoped , be consi- dered as one step in the right direction towards a complete solution of it . High Organization of very ancient Animals consistent with this Law . Much discussion has of late years taken place on the ...
Page 15
... epoch any group ( say a class of the Mollusca ) has attained to a great richness of species and a high organization . Now let this great branch of allied species , by geologi- cal mutations , be completely or partially destroyed ...
... epoch any group ( say a class of the Mollusca ) has attained to a great richness of species and a high organization . Now let this great branch of allied species , by geologi- cal mutations , be completely or partially destroyed ...
Other editions - View all
Contributions to the Theory of Natural Selection: A Series of Essays ... Alfred Russel Wallace No preview available - 2018 |
Contributions to the Theory of Natural Selection: A Series of Essays Alfred Russel Wallace No preview available - 2016 |
Common terms and phrases
abundant action adapted alike Amboyna animals antennæ appear beautiful become bees beetles birds Borneo brain brilliant build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous Crown 8vo curious Darwin Diphilus distinct Edition eggs essay evidence exactly existence external extinct Extra fcap facts faculties favourable Fcap flowers genera genus geological groups Guinea habits Heliconidæ imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male Mimeta mimic mimicry mode modified Moluccas moths natural selection nectary nest never nidification number of species observations occur organic Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar perfect period phenomena POEMS Polydorus possess present probably produced protection race regions remarkable render resemble savage sexes sexual sexual selection shown structure Sumatra tail theory of natural Theseus tints tion trees tropical variation varied varieties whole wings
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