ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
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gelatin, agar, blood-serum, potato, &c. In bouillon the bacillus grew 
from 1 fx at first to 6 fx later on, and was extremely motile. Growth on 
gelatin, which was not liquefied, was white. The rodlets from these 
plates were long, and pointed at both ends. In grape-sugar bouillon 
long chains of coccus forms developed. 
Injection of cultures into rabbits was followed by a rise of tempera- 
ture lasting several days, and the bacillus was found in the blood, though 
cultures could not be obtained therefrom. Spirocheetse were not found 
in the rabbit’s blood. Three men were injected with 0*2 ccm. of a one 
day old bouillon culture. All three had pyrexia, and one had two re- 
currences at intervals of ten days. In one case numerous rodlets and 
some filaments were found in the blood. 
