Spermatozoa

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“Types of spermatozoa. A, from the round worm (Ascaris) with a cap, somewhat amaeboid; B, from the Crayfish, with numerous projections; C, from Frog; D, from Sea-urchin. h, head; m, middle piece; n, nucleus; t, tailor flagelium.” — Galloway

Keywords

frog, crayfish, sea-urchin, nucleus, flagellum, spermatozoa, ascaris, amaeboid

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Microorganisms

Source

Thomas Walton Galloway, Zoology A Text-Book For Secondary Schools, Normal Schools and Colleges (Philadelphia: P. Plakiston's Son & Co., 1913) 29

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