FIG. 14--Astacus fluviatilis.--The corpuscles of the blood (highly magnified). 1-8 show the changes undergone by a single corpuscle during a quarter of an hour; 9 and 10 are corpuscles killed by magenta, and having the nucleus deeply stained by the coloring matter. n, nucleus.
[Editor's note: illustration is reproduced here approximately twice the size of the woodcut in the book.]
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