FISHERIES, GAME AND FORESTS. 31 



from the tree with a stream from a hose. Where there is a good head of water this 

 might prove the best method of controlling the pest. Otherwise, infested trees must 

 be headed in and sprayed with kerosene emulsion at the time the young appear. 

 Prepare the emulsion as follows: Dissolve one half pound of hard soap in one gallon 

 of boiling water and while still hot add two gallons of kerosene and emulsify by 

 passing rapidly through a force pump till it assumes a uniform creamy consistency and 

 oil does not separate. Dilute this with ten parts of water before using. In limestone 

 regions use the sour milk emulsion composed of one gallon of sour milk and two 

 gallons of kerosene; emulsify and dilute as described above. 



