. The cell; outlines of general anatomy and physiology. Cells; Anatomy; Physiology; Cells; Anatomy; Physiology. Fig. 16G. Fig. 167. Fig. 166.—Egg-follicle of Dytiscus marginalis with neighbouring yolk compartment, in which a large number of granules are being separated off. The germinal vesicle of the ovum is extending processes towards the accumulations of granules. (After Korschelt, PI. I., Fig. 20.) Fig. 167.—4 Transverse section of a secreting double cell from the egg-follicle of Kepa cinereaL. Tbe formation of the radiation figure is still taking place (x 270: after Kors- chelt, PL v., Fi
. The cell; outlines of general anatomy and physiology. Cells; Anatomy; Physiology; Cells; Anatomy; Physiology. Fig. 16G. Fig. 167. Fig. 166.—Egg-follicle of Dytiscus marginalis with neighbouring yolk compartment, in which a large number of granules are being separated off. The germinal vesicle of the ovum is extending processes towards the accumulations of granules. (After Korschelt, PI. I., Fig. 20.) Fig. 167.—4 Transverse section of a secreting double cell from the egg-follicle of Kepa cinereaL. Tbe formation of the radiation figure is still taking place (x 270: after Kors- chelt, PL v., Fier. 120). B Longitudinal section of a double cell from the egg-follicle of Nepa. Commencement of the development of the radiation figure ( x 195 : after Korschelt, PI. V., Fig. 121). From these and similar observations, Habei'landt and Korschelt draw the following conclusions, respecting the function of the cell-nucleus:— 1. " The fact that the nucleus is generally found in a definite position in the immature and developing cells, indicates that its function is connected chiefly with the developmental processes of the ; (Haberlandt.) 2. "From its position it may be concluded that the nucleus plays a definite part during the growth of the cell, especially during the thickening and increase in superficial growth of the. 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 Hertwig, Oscar, 1849-1922; Campbell, M. , tr; Campbell, Henry Johnstone, 1859- ed. London, S. Sonnenschein & Co. ; New York, Macmillan & Co.
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