. Senescence and rejuvenescence. Age; Reproduction. 336 SENESCENCE AND REJUVENESCENCE three species of turbellarian worms, forms related to Planaria; Fig 165 is the non-motile spermatozoon of the nematode worm Ascaris megalocephala; Figs. 166 and 167 show the two forms of spermatozoa found in certain snails; Figs. 168, 169, and 170 are. Figs. 154-157.—Male gametes of various animals: Fig. 154, Nereis, an annelid worm (from F. R. Lillie, '12); Fig. 155, Copris, a beetle (from Ballowitz, '^od); Fig. 156, Raja, a fish (from Ballowitz, '906); Fig. 157, Triton, a salamander (from Ballowitz, '906).
. Senescence and rejuvenescence. Age; Reproduction. 336 SENESCENCE AND REJUVENESCENCE three species of turbellarian worms, forms related to Planaria; Fig 165 is the non-motile spermatozoon of the nematode worm Ascaris megalocephala; Figs. 166 and 167 show the two forms of spermatozoa found in certain snails; Figs. 168, 169, and 170 are. Figs. 154-157.—Male gametes of various animals: Fig. 154, Nereis, an annelid worm (from F. R. Lillie, '12); Fig. 155, Copris, a beetle (from Ballowitz, '^od); Fig. 156, Raja, a fish (from Ballowitz, '906); Fig. 157, Triton, a salamander (from Ballowitz, '906). from various species of Crustacea, and Figs. 171 and 172 from arachnids, but Fig. 171 perhaps represents a stage of spermatozoan development rather than the mature form. Usually the male gamete in both plants and animals is highly motile, and the course of its development is to a large extent a. 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 Child, Charles Manning, 1869-1954. Chicago, Ill. , The University of Chicago Press
Size: 1020px × 2451px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectreproduction, bookyea
