nine parts of water, but for the elm leaf beetle it should be diluted 

 only four times. 



If a soap powder could be used in place of bar soap, which dis- 

 solves very slowly, time Avouldbe saved in making kerosene emulsion, 

 especially where spraying is done on a large scale, in this way the 

 emulsion could be made in the spraying tank, the boiling water being 

 poured in, the soap powder and kerosene oil added and the churning 

 done and it would then be ready for diluting. 



To determine if this could be done, experiments were performed 

 in making emulsion, using various soap powders in place of bar 

 soap, but it was found that even with six times as much of the 

 powder, by weight, as of bar soap, the emulsion could not be satis- 

 factorily prepared. 



