174 



Profs. Percy Frankland and Marshall Ward. 



61st day. 



o co o 



i-i CO o 

 iH rH 



100 



88 



nated with small 

 d colony. 



121 



5543 

 290 



40th day. 



67 



Contaminated • 

 with mould 

 89 



88 



75 

 67 



Largely contami: 

 smooth-rimme 

 80 | 





21st day. 







2041 

 547 



12th day. 



O O CO 



<X> co 



r-l 13 00 



00 33 CO 



Much multipled 

 498 



Probably more. 

 Contaminated 



-1-3 



13 



ti 



d 



o 13 



CO t> 

 (M i-H 



O 13 



3 3 



«3 



CO 00 C5 

 13 O 00 

 1> iH <N 



o o 



to to 



d 

 d 



g to 



3 



I 



SO 



03 



d i-i 

 o . 



d g 



Hi 



