Pests and Diseases 71 



tion is strained and diluted to 50 gallons and applied 

 at once. 



Bean spray. — Beans are notably sensitive to scalding 

 from arsenical insecticides. However, it becomes advis- 

 able at times to use these poisons on the bean crop. 

 The following formula may be used to good advantage 

 and without much danger of scalding : 



Lime sulfur solution, 1 quart. 

 Lead arsenate paste, 8 ounces. 

 Water, 50 gallons. 



Misdble oils. — A considerable number of these mix- 

 able oils may be obtained on the market. Prominent 

 among them are the Target Brand and Schnarr's Insect- 

 icide. Yothers' Formula No. 3 may be easily prepared 

 if it is found advantageous. 



Caustic potash whale-oil soap, 8 pounds. 

 Diamond paraffin oil, 28° Baume, 2 gallons. 

 Water, 1 gallon. 



The soap should be heated to melt it to an oily consistency, 

 then the paraffin oil added gradually, beating the soap 

 and oil vigorously while the oil is being added. The beat- 

 ing is continued for some time afterwards and the mixture 

 is thoroughly combined. The gallon of water may then 

 be added. To test the mixture, a small quantity is poured 

 into a glass of water and if free oil floats on the surface, the 

 stirring must be continued or more soap added. One 

 part of the mixture should be used to 200 or 300 parts 

 water. 



