64 FERMENTS IN MTLK 



Effect of Thunder-storms on Souring of Milk. It is a common 

 impression that thunder-storms hasten the souring of milk. This 

 was attributed to the electricity in the air accompanying the 

 storm. Experiments by several investigators have proved 

 that electricity does not have any effect on hastening the fer- 

 mentative changes of milk. The reason why milk sours more 

 quickly when an electrical storm is approaching is that the air 

 temperature is usually higher then than at any other time. This 

 higher temperature warms the milk and creates more favorable 

 conditions for the rapid multiplication of the germs present in the 

 milk. It is for this reason that milk sours more quickly during or 

 previous to a thunder storm than at any other time. 



