. General physiology; an outline of the science of life. . , Frog's leucocytes, or white blood-cells, each containing a bacterium. (After Metschnikoff.) //, A plant-ceU containing starch-grains, HI, Starch-grains isolated—a, from the potato ; b, from corn ; c, from the pea. seen, he regards as elementary organisms, the ultimate living elements of the cell. The composition and significance of most of these metabolic products of living substance which in the form of granules help to constitute the protoplasmic body, is not yet known. But some are characterised very exactly and are easil
. General physiology; an outline of the science of life. . , Frog's leucocytes, or white blood-cells, each containing a bacterium. (After Metschnikoff.) //, A plant-ceU containing starch-grains, HI, Starch-grains isolated—a, from the potato ; b, from corn ; c, from the pea. seen, he regards as elementary organisms, the ultimate living elements of the cell. The composition and significance of most of these metabolic products of living substance which in the form of granules help to constitute the protoplasmic body, is not yet known. But some are characterised very exactly and are easily recognised, such as the concentrically stratified starch-granules in plant-cells (Fig. 25, // and III), the fat-droplets in the cells of the lacteal glands, the glycogen-gramdes in liver-cells, the •pigment- granules in the pigment-cells of the skin of many coloured animals (Fig. 17, d), the aleurone-grains, consisting of proteid, in the cells of sprouting plant-seeds, the crystals of calcium oxalate in plant- cells, of calciicm guanin in pigment-cells, and many others, special mention of which would lead us too far. G 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Verworn, Max, 1863-1921; Lee, Frederic S. (Frederic Schiller), 1859-1939. London, Macmillan and co. , limited; New York, The Macmillan company
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