PLATE III. 



Saccharomycetes and Schizomycetes (Nageli), developed in urine (of 

 yellow-fever patient) exposed in laboratory of the Yellow-fever 

 Commission, Havana, My, 1879. Reproduced by permission of 

 the National Board of Health. 



Fig. 1. — Photo-micrograph made with Beck's £-in. objective 

 and Tolles's amplifier. 400 diameters. 



Fig. 2. — Photo-micrograph made with Zeiss's ^g-in. horn. im. 

 objective. 1,450 diameters. 



