THE MONTHLY BULLETIN. 



303 



sary to follow these recommendations the following dilutions showing 

 per cent of strength are taken from O'Kane.* 



For 4% strength add 155 gallons of water to 1 gallon of stock solution 

 For o% strength add V2i gallons of water to 1 gallon of stock sohition 

 For 7% strength add Si gallons of water to 1 gallon of stock solution 

 For 10% strength add 5§ gallons of water to 1 gallon of stock solution 

 For 12% strength add 4^ gallons of water to 1 gallon of stock solution 

 P'or 15% strength add Si gallons of water to 1 gallon of stock solution 

 For 18% strength add 2s gallons of water to 1 gallon of stock solution 

 For 2076 strength add 2i gallons of water to 1 gallon of stock solution 

 For 25% strength add !§ gallons of water to 1 gallon of stock solution 



DISTILLATE EMULSION. 



Distillate (28 degrees Baume ) 20 gallons 



Whale oil soap 30 pounds 



Water to mix 12 gallons 



Dissolve the whale oil soap in the water, heating it to the boiling 

 point; add the distillate and agitate thoroughly while the solution is 

 hot. For use add twenty gallons of water to each gallon of the above 

 mixture 



CARBOLIC ACID EMULSION. 



Whale oil soap 40 pounds 



Crude carbolic acid 5 gallons 



Water to mix -10 gallons 



Dissolve the soap in hot water (the soap must be entirely dissolved) ; 

 add the carbolic acid and heat to the boiling point for twenty minutes 

 (reserve some water to add in case the mixture begins to boil over). 

 For use add twenty gallons cf water to every gallon of the above stock 

 solution. The emulsion needs little or no agitation. 



This spray is especially recommended for mealy bugs, but is also suit- 

 able for plant lice and soft brown scale. It is also a good contact insec- 

 ticide for ants. 



CRUDE OIL EMULSION. 



Water 1"5 gallons 



Liquid soap 3 gallons 



Crude oil 25 gallons 



Fill the spray tank with the 175 gallons of water; add the liquid 

 soap ; agitate thoroughly for one minute, after which add the crude oil, 

 continuing the agitation. 



If the liquid soap cannot be had, use 20 poiuids whale oil soap, dis- 

 solved in 10 gallons of boiling water, to which three pounds of lye have 

 been added. 



During the spraying operation this mixture should be thoroughly 

 agitated and great care taken to wet all of the twigs. From 8 to 15 

 gallons should be used on a tree. The application should be made from 

 November to February. 



The crude oil emulsion is especially recommended for black scale 



*Injinious Insects, W. C. O'Kane, p. 7 4. 



