350 



Profs. Percy Frankland and Marshall Ward. 



Table 



XIII. 



On August 25 two flasks labelled F 7 and F 8 were exposed as the 

 last, from 9.30 A.M. to 4 P.M., weather mixed clouds and bright sunny 

 intervals. 



Four samples taken at the beginning gave 1666, 1292,1394, and 

 1768 colonies per c.c. ; total, 6120 ; average, 1530 germs per c.c. to 

 start with. 



