236 236 OHIO EXPERIMENT STATION: BULLETIN 194 



EXPLANATION OP PLATE XVIIL 



Fig-. 1. Preparing- kerosene emulsion by the use of a steam boiling- 

 plant, capable of preparing 3000 to 4000 gallons of first-class 

 emulsion per day. 



Pig, 2. Same rig as above, being used for boiling lime sulfur wash. 

 Used by the Department of Forestry, Cleveland, Ohio. 



