PROCEEDINGS ROCHESTER ACADEMY OF SCIENCE. 
PLATE 7. 
2 
PHOTO-MICROGRAPH OF TYPHOID BACILLI, OBTAINED FROM SAMPLES OF ey 
WATER FROM SPRINGWATER, N. Y. 
sa Fig. 1. Cover glass preparation from a culture upon potato. , Fuchsin ‘sta 
a : Zeiss ;'5, homogeneous immersion. Projection Ocular 4. 
i) Orthochromatic plate and Oxy-hydrogen light. XX 3000. 
i . Showing vacuoles. 
