74 CULTURES OF BACTERIA. 
V Optical Characters. 
Transparent. 
Vitreous, transparent and colorless. 
Oleaginous, transparent and yellow. 
Resinous, transparent and brown. 
Translucent. 
Fics. 45, 46.—The various appearances of colonies of 
bacteria under the microscope: a, colony of Bacillus 
muscoides (Liborius); 6, colony of Bacterium anthracis 
(Fliigge). 
Porcelaneous, translucent and white. 
Opalescent, translucent, grayish white by 
reflected light, smoky brown by trans- 
mitted light. 
