Collected papers . ; andfigs. 27-31, 40-42 from owl 23. (Figs. 14-31 are from preparations stained by Giemsa.) Figs. 14 and 15.—Small spindles. Fig. 16.—Small spindle, just commencing division; there are twokinetonuclei, and apparently the karyosome in the trophonucleus hasalso divided. Figs. 17-19.—Intermediate stages in the growth of the medium-sizedslender type. Figs. 20 and 21.—Fully developed medium-sized forms. Figs. 22 and 24.—Massive blue forms. Fig. 23.—Small individual of the same type. Figs. 25, 26, and 28.—Stout spindles. Fig. 27.—Transitional form from small fusiform type to stout


Collected papers . ; andfigs. 27-31, 40-42 from owl 23. (Figs. 14-31 are from preparations stained by Giemsa.) Figs. 14 and 15.—Small spindles. Fig. 16.—Small spindle, just commencing division; there are twokinetonuclei, and apparently the karyosome in the trophonucleus hasalso divided. Figs. 17-19.—Intermediate stages in the growth of the medium-sizedslender type. Figs. 20 and 21.—Fully developed medium-sized forms. Figs. 22 and 24.—Massive blue forms. Fig. 23.—Small individual of the same type. Figs. 25, 26, and 28.—Stout spindles. Fig. 27.—Transitional form from small fusiform type to stoutspindle. ON THE TRYPANOSOME OF THE LITTI^E OWI,. 185 Figs. 29-31.—Stout spindles, more or less flattened-ont (leaf-like);the individual of fig. 29 is the shortest of this kind found. (Figs. 32-44 are from preparations stained by irou-hsematoxylin.) Figs. 32-35.—Small spindles. Figs. 36-39.—Medium-sized slender forms. Figs. 40-42.—Stout spindles. Fits. 43 and 44.—Massive blue forms. ^1/


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