64 CULTURES OF BACTERIA. 
Il, Liquefying Cultures. 
Line of liquefaction may be— 
Crateriform, a saucer-shaped liquefaction. 
Saccate, shape of an elongated sac, tubular, 
cylindrical. 
Infundibuliform, shape of a funnel, conical. 
Napiform, shape of a turnip. 
Fusiform, shape of a parsnip, narrow at either 
end, broadest below the surface. 
Stratiform, liquefaction extending to walls of the 
tube and downward horizontally. 
Fic. 39.—Microspira comma (Asiatic cholera): gelatin 
puncture cultures aged forty-eight and sixty hours 
(Shakespeare). 
2. “Stroke”? Cultures. 
(1) Sterilize the platinum needle, touch it to the 
