PLATE V 



Cultivation of Spirocheta Refringens. (Noguehi.) 



FIG. 1. A schematic drawing of Spirocheta refringens from pure cultures (dark field). 

 FIG. 2. Spirocheta refringens from a three weeks' old pure culture in ascitic tissue agar, at 

 37 C. (dark field). X 1100. 



FIG. 3. Spirocheta refringens from a pure culture seven days old (dark field). X 1100. 

 FIGS. 4 and 5. Spirocheta refringens from a pure culture two weeks old (dark field). X 1100. 



