202 BACTERIA, YEASTS, AND MOLDS 



ice cream, and it is therefore desirable to be particularly 

 on one's guard against its use in warm weather and, if 

 possible, to use only that which has been made from fresh 

 materials. Since the dangers are greatest in summer we 

 should be particularly careful at this season not to allow 

 any putrescible food to be warmed by the sun or by 

 standing near a stove. 



