432 



SPECIFIC MICRO-ORGANISMS 



of the small rounded agamete results in the formation of long 

 chains of oval bodies inside a cell of the host. From these the 

 spores are again produced. Pebrine is a disease of the greatest 



FIG. 207. Nosema bombycis. Section of intestinal epithelium of silkworm 

 showing spores of Nosema and also the peculiar multiplication resembling the 

 growth of a mold. (From Doflein after Stempell.} (See also Fig. 81, p. 159.) 



importance to the silkworm industry. It is effectively restricted 

 by a careful microscopic examination of all the silkworm eggs 

 and the exclusion and destruction of all those in which the para- 

 site exists (Pasteur's method). 



