The Cell doctrine: its history and present stateLindsay & Blakiston, 1870 - 150 páginas |
Termos e frases comuns
according Anatomie Beale become blastema blood corpuscle blood globules body capillary cartilage cell contents cell doctrine cell formation cell theory cell wall Cellular Pathology centre citat cleus composed connective tissue connective tissue corpuscles constituting contractile cytoblasts Edinburgh elastic elementary elements endoplast epigenesis epithelial cell epithelium Fallopius fibres fibrous fluid formed material germinal matter germinal vesicle Goodsir granular granules growth Hæckel Haller Henle Histologie histologists homogeneous Huxley inaug inch intercellular substance layer Leipzig London Martin Barry masses of germinal Max Schultze membrane microscope millimetre mode molecular molecules muscle nettle nucleated cell nucleolus nucleus nutrition observations organic origin of cells ovum pabulum Paris particles periplast Physiology plants plasm present day Prof proto protoplasm pure germinal matter pus corpuscles puscle result sarcode Schleiden and Schwann so-called structure takes place tendon tion Transac Ueber vegetable cell vessels views Virchow Virchow's Archiv vital white blood yolk young cells
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Página 93 - gross and brutal materialism" were the mildest phrase applied to them in certain quarters. And, most undoubtedly, the terms of the propositions are distinctly materialistic. Nevertheless two things are certain : the one, that I hold the statements to be substantially true; the other, that I, individually, am no materialist, but, on the contrary, believe materialism to involve grave philosophical error.
Página 97 - ... phenomena of spirit, in terms of matter: matter may be regarded as a form of thought, thought may be regarded as a property of matter — each statement has a certain relative truth. But with a view to the progress of science, the materialistic terminology is in every way to be preferred. For it connects thought with the other phenomena of the universe, and suggests inquiry into the nature of those physical conditions, or concomitants of thought, which are more or less accessible to us, and a...
Página 96 - If we find that the ascertainment of the order of nature is facilitated by using one terminology, or one set of symbols, rather than another, it is our clear duty to use the former; and no harm can accrue, so long as we bear in mind, that we are dealing merely with terms and symbols.
Página 97 - Thus there can be little doubt, that the further science advances, the more extensively and consistently will all the phenomena of Nature be represented by materialistic formulae and symbols.
Página 96 - In itself it is of little moment whether we express the phenomena of matter in terms of spirit, or the phenomena of spirit in terms of matter...
Página 92 - An animal cannot make protoplasm, but must take it ready-made from some other animal, or some plant — the animal's highest feat of constructive chemistry being to convert dead protoplasm into that living matter of life which is appropriate to itself. Therefore, in seeking for the origin of protoplasm, we must eventually turn to the vegetable world.
Página 97 - But the man of science, who, forgetting the limits of philosophical inquiry, slides from these formulae and symbols into what is commonly understood by materialism, seems to me to place himself on a level with the mathematician, who should mistake the x's and y's with which he works his problems, for real entities — and with this further disadvantage, as compared with the mathematician, that the blunders of the latter are of no practical consequence, while the errors of systematic materialism may...
Página 88 - Beast and fowl, reptile and fish, mollusk, worm, and polype, are all composed of structural units of the same character, namely, masses of protoplasm with a nucleus.
Página 87 - If the drop of blood be kept at the temperature of the body, these colourless corpuscles will be seen to exhibit a marvellous activity, changing their forms with great rapidity, drawing in and thrusting out prolongations of their substance, and creeping about as if they were independent organisms.
Página 86 - Each stingingneedle tapers from a broad base to a slender summit, which though rounded at the end is of such microscopic fineness that it readily penetrates and breaks off in the skin. The whole hair consists of a very delicate outer case of wood, closely applied to the inner surface of which is a layer of semi-fluid matter, full of innumerable granules of extreme minuteness.