46 STORRS AGRICULTURAL EXPERIMENT STATION. 
did not show itself in this sample of milk after the first few 
hours, and evidently played no important part in the changes 
that took place in the milk. The differentiation of Groups I. 
and IV. was, however, not satisfactory. 
PLATA, 
LONE T tesla 
2 
IVY 146 
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Sou 
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Group 
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1835 224 136 
37° 
72 
The results of this experiment are shown graphically in 
Platej1. In this and the following plates only the five chief 
types of bacteria are represented. 
