PLATE. If. 
DIFFERENT MODES OF GROUPING. 
From photo-micographs made in Havana and New Orleans ; copied by 
permission of the National Board of Health. 
Fig. 1. — Torula form of spherical bacteria (Micoderma aceti 
Pasteur) from rotten banana, New Orleans, April, 1880. > 1500 
diameters by Zeiss’s ;/g in. objective. 
Fie. 2. — Zooglea form of spherical bacteria developed in culture- 
cell containing blood of leper. > 600 diameters. 
Fie. 3. — Mycoderma, from surface of foul gutter-water. New 
Orleans, April, 1880. X 400 diameters by Becks, 4 in. objective. 
Fic. 4. — Leptothrizx form of desmobacteria developed in yellow- 
fever urine, exposed in laboratory, Havana, July, 1879. > 400 
diameters by Becks, + in. objective. 
