act as a repellant for two or three days. In tliis respect It waS 

 not so satisfactory as the oilj' combination, althongh the cattle 

 to wiiicii it was applied were cleaner and less greasy. By 

 spraying with this combination three times a week the cattle 

 can be kept free from the Horn Fly witii very little trouble, 

 and at small expense. 



The accompauj'ing figures were first puldished in Inject Lift\ 

 issued by tlie U. S. Department of Agriculture. 1 desire also 

 to acknowledge my obligations to Mr. E. M. Pike for coopera- 

 tion in conducting the experiments here reported. 



Refuse tobacco stems are to be used in making the decoction 

 described above. AVe purchased from Weeks & Potter, whole- 

 sale druggists, Boston, crude cotton seed oil for (V) cents a 

 gallon ; crude carbolic acid for 50 cents a gallon and pine tar 

 for 37 cents a gallon. Fish oil is quoted at $1.10 a gallon. 



