. A manual of elementary zoology . Zoology. ^ Fig. 406.—The development ol the spermatozoa of the earthworm. A, Stages from the vesicula seminaiis of a young worm ; B, from that of an older worm. 1, Sperm mother-cell; 2-7, stages in the division|to form spermatozoa ; 7-11, shaping of the spermatozoa, which are still adherent to the mass of residual protoplasm (cytophore) ; 12, a ripe spermatozoon, unstained. The head in 12 is represented rather too broad. The dark bodies are the nuclei, stained. 567. Please note that these images are extracted from scanned page images that may have been di
. A manual of elementary zoology . Zoology. ^ Fig. 406.—The development ol the spermatozoa of the earthworm. A, Stages from the vesicula seminaiis of a young worm ; B, from that of an older worm. 1, Sperm mother-cell; 2-7, stages in the division|to form spermatozoa ; 7-11, shaping of the spermatozoa, which are still adherent to the mass of residual protoplasm (cytophore) ; 12, a ripe spermatozoon, unstained. The head in 12 is represented rather too broad. The dark bodies are the nuclei, stained. 567. 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
