Bui. 940, U. S. Dept. of Agriculture. 



Plate vii. 



64,000 



212,000 



56,000 







168,000 





76,000 



**- "' 



163,000 



182,000 



??"»' 





146,000 



£6,000 



il.000 



ee.ooo 



19,000 



102,000 



Sediment Disks from Pints of Milk Produced Under Dirty Con- 

 ditions, with Utensils not Sterilized, Showing Results of the 

 Sporogenes Test and the Total Counts. 



