. The physiology of reproduction. Reproduction. SPERMATOGENESIS—INSEMINATION 173 Schweigger-Seidel ^ and La Valette St. George ^ were the first to prove, independently but almost simultaneously, that the. Fig. 46.—Human spermatozoa on the flat and in profile. (After Bramman, from Schafer.) x 2500. Those on the right have adhering protoplasm. The tail is only partly shown in the two seen in profile. ' Schweigger-Seidel, " Uber die Samenkorperchen und ihre Entwickelung,'' Arch. f. Mikr. Anat., vol. i., 1865. ^ La Valette St. George, " tjber die Genese der Samenkorper," Arch. f. Mi


. The physiology of reproduction. Reproduction. SPERMATOGENESIS—INSEMINATION 173 Schweigger-Seidel ^ and La Valette St. George ^ were the first to prove, independently but almost simultaneously, that the. Fig. 46.—Human spermatozoa on the flat and in profile. (After Bramman, from Schafer.) x 2500. Those on the right have adhering protoplasm. The tail is only partly shown in the two seen in profile. ' Schweigger-Seidel, " Uber die Samenkorperchen und ihre Entwickelung,'' Arch. f. Mikr. Anat., vol. i., 1865. ^ La Valette St. George, " tjber die Genese der Samenkorper," Arch. f. Mikr. Anat., vol. i., 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 Marshall, F. H. A. (Francis Hugh Adam), 1878-1949; Cramer, William, 1878-1945; Lochhead, James. London, New York, Longmans, Green


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