PLATE 16. 



TYPICAL MILK PLATES. 



e. -05 c.c. of a 1 in lOOo dimtiou after li5 days at 15' C. 



/. -05 c.c. of a 1 in 1000 dilutiou after 10 davs at 5' C. 



[Between pages l.S2-13$. 



