Protoplasm; or, Life, force, and matter

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Page 95 - Thousand, 21s. HOW TO WORK WITH THE MICROSCOPE, The Fourth Edition, very much enlarged. This work is a complete manual of microscopical manipulation, and contains a full description of many new processes of investigation, with directions for examining objects under the highest powers. With Seventy Plates, including many
Page 28 - 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." If the white of an egg is living matter, why should not its shell be so considered
Page 94 - formerly Physician to King's College Hospital, and Professor of Physiology and of General and Morbid Anatomy in King's College, London. Second Edition. Edited by Dr. BEALE. Now ready, fourth thousand,
Page 20 - th of an inch or more in diameter. The " granule" is a rounded or oval disc, which is stained yellow by iodine, and is dissolved by acetic acid. " The granule heaps and the transparent gelatinous matter in which they are embedded represent masses of protoplasm." One of the masses of. this deep-sea
Page 37 - can be obtained for examination by placing a small fragment of animal or vegetable matter in a little water in a wine-glass, and leaving it in the light part of a warm room for a few days. I have found it convenient to introduce a few filaments of cotton wool into the water. The
Page 38 - One characteristic of every kind of living matter is spontaneous movement. This, unlike the movement of any kind of non-living matter yet discovered, occurs in all directions, and seems to depend upon changes in the matter itself, rather than upon impulses communicated to the particles from without.
Page 40 - corpuscle; every part of the substance of a corpuscle exhibits distinct alterations within a few seconds. The material which was in one part may move to another part. Not only does the position of the component particles alter with respect to one another, but it never remains the same. There is no
Page 45 - make their appearance in what was the original nucleolus. The whole process consists of evolution from centres, and the production of new centres within pre-existing centres. Zones of colour, of different intensity, are often observed in a cell coloured with carmine ; the outermost or oldest, or that part which is losing its vital
Page 41 - another portion. A bulging may occur at one point of the circumference, or at ten or twenty different points at the same moment. The moving power evidently resides in every particle of a very transparent, invariably colourless, and structureless material. By the very highest powers only an indication of minute spherical particles can be discerned. Because molecules have been
Page 40 - component particles alter with respect to one another, but it never remains the same. There is no alternation of movements. Were it possible to take hundreds of photographs at the briefest intervals, no two would be exactly alike, nor would they exhibit different gradations of the same change; nor is it possible to represent the movements with any degree of

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