. Elements of histology. Histology. Cells. In amceboid cells, such as the white corpuscles of the blood, the hyaloplasm is the substance in which the spontaneous or amoeboid changes and movement are principally lodged, as has been shown by instan- taneous electric illumination by Strieker. In the protoplasm of many cells are lodged granules of various kinds, microsomes ; they differ in size, shape, colour, and chemical nature, and are, as a rule, the result of cell activity. Such are the zymo- gen granules in secreting gland cells ; eosinophile, basopliile, and neutrophile or amphophile granul
. Elements of histology. Histology. Cells. In amceboid cells, such as the white corpuscles of the blood, the hyaloplasm is the substance in which the spontaneous or amoeboid changes and movement are principally lodged, as has been shown by instan- taneous electric illumination by Strieker. In the protoplasm of many cells are lodged granules of various kinds, microsomes ; they differ in size, shape, colour, and chemical nature, and are, as a rule, the result of cell activity. Such are the zymo- gen granules in secreting gland cells ; eosinophile, basopliile, and neutrophile or amphophile granules in leucocytes ; glycogen granules in the liver cells, cartilage cells, and leucocytes ; pigment granules in various kinds of jDigmented cells; fat granules and fat globules in wandering cells, in connective-tissue cells, in liver cells, in the epithelial cells of the milk gland, etc. It is not justifiable to as- sume with Altmann that these microsomes or bio- blasts are living entities in the sense that the whole cell is. In the cell proto- plasm of leucocytes, of epithelial and other cells, certain granules and fibrils have been de- scribed by Flemming, Boveri, Heidenhain, and others, which being of a constant and definite nature play an important part in the division of the cell and its nucleus. This is the centrosome, and with its radiating fibrillse forms the attractionsjyJiere (Fig. 8). The centrosome is a granule surrounded by a hyaline. Fig. 8.—Leucocyte of Salamandra con- taining two nuclei, and showing the attractionsphere : the centrosome is already divided into two. (After Dr. Martin Heidenhain.). 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 Klein, E. (Edward), 1844-1925; Edkins, John Sydney, b. 1865. Philadelphia : Lea Brothers
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