60 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 3 



added to 50 gallons of the mixture. See results under No. 3. No 

 advantage was detected from the use of lye. 



7. "Niagara" lime-sulfur solution, one part to six of water. See 

 results under No. 3. 



8. Home-made lime-sulfur solution. See results under No. 3. 



Lime 1 lb. 



Sulfur 1 lb. 



Water 2 gal. 



9. Home-made lime-sulfur solution. See results under No. 3. 



Lime 1 lb . 



Sulfur 1 lb. 



Water ; 3 gal. 



10. Lye solution. Very little benefit was derived from this treat- 

 ment. 



Lye 1 lb. 



Water 3 gal. 



11. Lye-sulfur solution. Prepared as with lime-sulfur solution; 

 cooked until the sulfur was all dissolved. The results were not con- 

 vincing; some good was done. 



Lye 1 lb. 



Sulfur 11/2 lb. 



Water 3 gal. 



12. Pratt's "Scalecide, " one part to ten of water. 



Before hatching time the eggs showed an oily appearance but 

 hatched normally. Some scales were loosened and dropped off, 

 though a smaller proportion than with undiluted kerosene, as reported 

 under No. 2. Not a satisfactory treatment. 



13. Whale-oil soap solution, one pound to one gallon of water, ap- 

 plied hot. Apparently this treatment had no effect. 



II 



Second series applied early in hatching period. Desired to be 

 effective in killing young that had hatched and those about to hatch. 

 June 14-17. 



14. Pratt's "Scalecide," at rate of one to fifty. 



A small percentage of the young lice were killed. Not a satisfae- 



