PLATE III. 
Fig. I — Garden mould + tap water + B. 
Fig- 2 
Fig- 3 
Fig- 4 
Nutrient agar at 42° C. 
Nutrient agar at 37 0 C. 
Carbol agar 1 in 1000 at 37 0 C. 
Bile-salt agar at 37 0 C. 
