PLATE II. 



Fig. 6.— Sewage Proteus, (About natural size.) 

 Gelatine plate culture. Two days' growth at 2d^ C. 



Fig. 7. — B.\ciLLUs Enteritidi.s Sporogenes (Klein), (x 2,000.) 

 Microscopic double-stained preparation from a serum culture, showing 

 spores. 



