An Introduction to general biologyH. Holt, 1895 - 231 páginas |
Términos y frases comunes
action agamogenesis alimentary canal Amaba antheridium apical buds appears archegonium archenteron bacteria become Biology blastula blood blood-vessels body body-wall branches bundles carbon dioxide cavity cells chemical chlorophyll cilia cœlom consists contains contractile differentiation digestion dissepiment division dorsal vessel earthworm ectoblast efferent elongated embryo energy environment epidermis excretion fern fibres fibro-vascular fission fluid free oxygen function fundamental ganglia gastrulation germ-cells germ-layers higher animals individual Infusoria known later layer leaf lifeless matter living matter living things longitudinal Lumbricus macronucleus mass membrane mesoblast metamerism microscope mouth muscles muscular nephridia nephridium nerve-cord nerves nucleus organs outer ovary ovum parenchyma pass pharynx physiological plants and animals portion posterior proteids prothallium Protococcus protoplasm Pteris reproduction rhizome Science sclerotic setæ showing shown side skin somite species spermatozoa spores starch stomach-intestine structure sub-intestinal substance surface tion tissues tube unicellular vacuole vegetal ventral Vorticella walls worm yeast
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Página 231 - NEW YORK. Books marked * are chiefly for reference and supplementary use, and are to be found in Henry Holt &* CoSs List of Works in General Literature. For further particulars about books not so marked see Henry Holt &•* CoSs Descriptive Science Catalogue. Either list free on application. Excepting JAMES...
Página 34 - C.) produce also the death of most organisms. " Amongst the organic proximate principles which enter into the composition of the tissues and organs of living beings, those belonging to the class of proteid or albuminous bodies occupy quite a peculiar place and require an exceptional treatment, for they alone are never absent from the active living cells which we recognize as the primordial structures of animal and vegetable organisms. In the plant, whilst we recognize the wide distribution of such...