The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 166
... tion of the sexual generation with which we will deal later . ) Now what does all this signify ? The earliest and ... tion from water and an adapta- tion to dry land is traceable . And with ditions the sperma tozoa are absolutely ...
... tion of the sexual generation with which we will deal later . ) Now what does all this signify ? The earliest and ... tion from water and an adapta- tion to dry land is traceable . And with ditions the sperma tozoa are absolutely ...
Página 244
... tion simply by extinction . in the regions between . Discontinuous distribu- tion ; the predominance of different groups of animals in different con- tinents ; the existence of unique species on remote islands ; the total absence of ...
... tion simply by extinction . in the regions between . Discontinuous distribu- tion ; the predominance of different groups of animals in different con- tinents ; the existence of unique species on remote islands ; the total absence of ...
Página 893
... tion of , 775-780 Regan , Dr. Tate , 236 Rice - grass , 589 Scale - worm , 138 842 Rickets , 638 , 639 145 , 156 Reindeer , 494 , 548 moss , 177 , 591 Rejuvenation , 89 , 330 ; is it desirable ? 335-336 Religion and biological discovery ...
... tion of , 775-780 Regan , Dr. Tate , 236 Rice - grass , 589 Scale - worm , 138 842 Rickets , 638 , 639 145 , 156 Reindeer , 494 , 548 moss , 177 , 591 Rejuvenation , 89 , 330 ; is it desirable ? 335-336 Religion and biological discovery ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
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Términos y frases comunes
active algæ animals arthropods bacteria become birds blood body bones brain branches called capillaries carbon carbon dioxide cells Cenozoic changes chemical chromosomes colour creatures crustaceans digestive Echinoderms eggs elaborate embryo Eocene Everyman evolution example eyes fact female fertilized fish flatworms flowers fluid forms fossils gametes genes germ-plasm glands grow growth heart human Ichthyosaurs important individual insects intestine kidneys kinds land larvæ layer less limbs liver living things lobster lungs male mammals marsupials matter means ment microscopic million molluscs mouse mouth movements muscles mutations nervous system normal notochord Obelia organs ovary ovum oxygen pair parasitic phylum plants polyps produced proteins prothallus protozoa reproduction reptiles round secretion sense-organs sexual shell skeleton skin species spermatozoa sperms spores stage starfish stomach structure substances surface swim tail teeth thyroid tiny tion tissue to-day tube types variations various vertebrates whole worms