180 OPHIDIANS. 
Figs. 11 and 12 show the microscopical sfigmas of the Daboia 
poison in the blood of a fowl. 
Fic. 11. Fic. 12. 
330 diameters. 1080 diameters. 
Study of the Sfigmas. 
Fig. 3 does not show a single poison-globule or corpuscle 
in the field. Fig. 4 exhibits two disk-like corpuscles, with an 
adjacent blood-globule which has a double-lined periphery, and 
several others of a similar appearance in other parts of the 
field; a greater proportion of the blood-corpuscles remain 
unaffected. In Fig. 5, under a power of 1080, only three or 
four of the blood-globules are not changed in appearance, and 
the oblique figures are wanting. Figs. 5, 6, 7, and 8 all ex- 
hibit parallelograms and the oblique figures under the three 
different powers used, but only Fig. 7 shows a poison-globule 
in the field; each one, however, has corpuscles evidently 
changed by the poison, as indicated by large numbers of them 
with the double-lined periphery. In Figs. 9 and 10 the 
poison-corpuscles are much more abundant, and the appear- 
ance indicates a much greater decomposition of the blood 
than in any of the other sfigmas. The poison-corpuscle in 
Fig. 12, although of the same kind as in Fig. 7, yet has a 
