282 MICRO-ORGANISMS AND DISEASE [ciiap. 



layer ; this after some days shows some patches thicker 

 than others, is b'ght brown, and in some patches even dark 

 brown. 



On potato at 35-37" C. a thick cohesive layer like paste 

 is formed ; this is of a brownish colom- ; the growth is ex- 



\ 



e 





\ ill ." 



f |8 .' '? ' »" J 



/ ^/7 4 



•iOUC" 



Fig. 109.— From an Artificial Culture of Bacillus Anthraci?:, carrif-h 

 ON AT Ordinary Temperature and on Solid (Gelatine) Material. 

 Torula Form. 



Magnifying power 450. (Stained with Spiller's purple.) 



tensive after a few days. Both on nutrient Agar and on 

 potato the film is a mass of threads matted together, and 

 after two to three days copious spore formation is noticed 

 in many threads ; at the end of ten days to a fortnight the 

 whole of the film is a mass of spores ; little of the original 

 bacilli is recognisable 



