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FromThe Crayfish, by T. H. Huxley, 1879

Figure 34

fig. 34, early development

FIG. 34.--Astacus fluviatilis.--A--D, different stages in the development of a spermatozoon from a seminal cell; E, a mature spermatozoon seen from the side; F, the same view en face (all x 850); G, a diagrammatic vertical section of the same.

[Editor's note: illustration is reproduced here approximately twice the size of the woodcut in the book.]

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