Protoplasm: Or, Matter and Life. With Some Remarks Upon the "Confession" of Strauss |
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Common terms and phrases
accept admit albuminous amoeba animals appear assertions Bathybius believe blood body brain cartilage cell cell-wall centres changes chemical chemist cilium colourless complex concerning conclusions contractile corpuscles dead demonstrated discovered disease doctrine elementary enquiry epithelium exhibits existence explained external facts favour feel fluid formation formed material fungus germinal spots grow growth Herbert Spencer Huxley Huxley's hydraulic machinery influence inorganic kind lifeless living matter living particles living things machine manifested masses of bioplasm Max Schultze mechanical membrane microscope mind minute molecular molecules movements moving muscles muscular tissue nature nerve fibres non-living matter nucleoli nucleus nutrient nutrition observed occur ovum pabulum particle of living peculiar phenomena philosophy physical basis physicists physiology portion properties protoplasm proved question reader reason regarded remarks result scientific seems sentience simple living structure structureless substance supposed tion transparent true truth utricle views vital force vital power white blood-corpuscle
Popular passages
Page 98 - ... drawing in and thrusting out prolongations of their substance, and creeping about as if they were independent organisms. The substance which is thus active is a mass of protoplasm; and its activity differs in detail rather than in principle from that of the protoplasm of the nettle. Under sundry circumstances the corpuscle dies and becomes distended into a round mass, in the midst of which is seen a smaller spherical body, which existed but was more or less hidden in the living corpuscle, and...
Page 143 - The consciousness of this great truth weighs like a nightmare, I believe, upon many of the best minds of these days. They watch what they conceive to be the progress of materialism in such fear and powerless anger as a savage feels when, during an eclipse, the great shadow creeps over the face of the sun. The advancing tide of matter threatens to drown their souls; the tightening grasp of law impedes their freedom; they are alarmed lest man's moral nature be debased by the increase of his wisdom.
Page 52 - Molecular forces determine the form which the solar energy will assume. In the one case this energy is so conditioned by its atomic machinery as to result in the formation of a cabbage ; in another case it is so conditioned as to result in the formation of an oak.
Page 100 - ... combination, the nature of which has never been determined with exactness, the name of Protein has been applied. And if we use this term with such caution as may properly arise out of our comparative ignorance of the things for which it stands, it may be truly said that all protoplasm is proteinaceous; or, as the white, or albumen, of an egg is one of the commonest examples of a nearly pure protein matter, we may say that all living matter is more or less albuminoid.
Page 142 - And as surely as every future grows out of past and present, so will the physiology of the future gradually extend the realm of matter and law until it is coextensive with knowledge, with feeling, and with action.
Page 97 - If the fundamental proposition of evolution is true, that the entire world, living and not living, is the result of the mutual interaction, according to definite laws, of the forces possessed by the molecules of which the primitive nebulosity of the universe was composed...
Page 171 - is a definite combination of heterogeneous changes, both simultaneous and successive, in correspondence with external coexistences and sequences.
Page 185 - ... is, I believe, absolute. The pabulum does not shade by imperceptible gradations into the living matter, and this latter into the formed material; but the passage from one state into the other is sudden and abrupt, although there may be much living matter mixed with little lifeless matter, or vice versd.
Page 303 - ... foregoing observations the reader will be led to conclude that I regard a nervous apparatus as consisting essentially of fine fibres and masses of bioplasm, which form uninterrupted circuits. The fibres are continuous with the bioplasts, of which some are central, some peripheral, and grow from them. By chemical changes in the matter formed by the bioplasts electrical currents may be produced, and these traverse the fibres. The currents varying in intensity according to the changes in the nerve-cells...
Page 309 - Reymond's induction coil, are applied to the surface of the brain, without injury to the cortical substance. 1. The anterior portions of the cerebral hemispheres are the chief centres of voluntary motion and the active outward manifestation of intelligence. 2. The individual convolutions are separate and distinct centres; and in certain...