H. B. Fantham and A. Porter 
129 
Herpetomonas pattoni found in the blood of mice. Organisms stained inira vitam. 
Figs. 1-5. Flagellate forms. 
Figs. 6, 7. Parasites approaching the non-flagellate stage^ and tending to become 
leishmaniform. x 3000 approximately. 
