34 DAIRY LABORATORY GUIDE 



.5X90 + .9X10-.4X100 



8 -.4 



= 35 per cent starter to 



be used. 



2 



CO ~* 



^ g 



> fl 



W) S 



II 



O "*"* 



g i 



co O- 

 S 



^ . 

 I 



Experiment with the use of commercial lactic acid 

 for ripening cream, using from 10 to 20 c.c. per gallon. 



