Bui. 224, U. S. Dept. of Agriculture. 



Plate I. 



Fig. 1.— One Drop of Water from a 

 Saucer Washed in Running Water 

 after Receiving a Bad'Egg. (Reprint 

 from Circular 98, Bureau of Chem- 

 istry.) 



Fig. 2.— One Drop of Water from Saucer 

 Shelf. (Reprint from Circular 98, 

 Bureau of Chemistry.) 



Fig. 3. 



-One Drop of Drip 1 

 (B House). 



from Tray 



Fig. 4.— Finger Tips of Breaker 

 (B House). 



B HOUSE. 



