35 



advisable to add the bluestone (or Bordeaux mixture) in order to counter- 

 act fungus diseases at the same time as the insects are destroyed. The 

 bluestone (copper sulphate) should be dissolved by suspending- it in a 

 wooden vessel containing- 4 or 5 gallons of water, and the lime slaked 

 in another vessel; if lumpy, the lime should be strained through coarse 

 sacking. Pour the bluestone solution into a barrel and half^J with 

 water; dilute the slaked lime to half a barrel and mix the two™ her. 



The Paris green should be made into a paste with warm waters ired 

 into the barrel and stirred thoroughly. The mixture is then reH (<>r 

 use. The addition of the lime prevents the poison from scorch* the 

 foliage. 



Kerosene Emulsion. 



The following is the formula recommended by Dr. Fletcher (CJPtral 

 Experimental Farm Bulletin No. 52) : 



Kerosene (coal oil) 2 gallons. 



Rain water 1 gallon. 



Soap I pound. 



Boil the soap in the water till all is dissolved; then, while boilino- hot, 

 turn it into the kerosene and churn the mixture constantly and forciblv 

 with a syringe or force pump for five minutes, when it will be of a smooth, 

 creamy nature. If the emulsion is perfect, it will 'adhere to the surface 

 of glass without oiliness. As it cools it thickens into a jelly-like mass. 

 This gives the stock emulsion, which must be diluted with nine times its 

 measure of warm water before using on vegetation. The above quantity 

 of three gallons of emulsion will make 30 gallons of wash. 



Kerosene emulsions may also be made conveniently by using an equal 

 amount of sour milk instead of the soap and water in the above formula, 

 and churning for the same time to get the stock emulsion. 



Another method, where lime cannot be conveniently obtained, is as 



follows : 



The requisite amount of kerosene is placed in a dry vessel and flour 

 added in the proportion of 8 ounces to one quart of kerosene. It is then 

 thoroughly stirred and two gallons of water added for every quart of 

 kerosene ; the whole is then vigorously churned for from two to four 

 minutes, and the emulsion is readv for use. It has been found that by 

 scalding the flour before adding the kerosene, an excellent emulsion which 

 does not separate in the least after standing for a week, can be prepared 

 with 2 ounces of flour, by mixing the resulting paste with one quart of 

 kerosene and emulsifying with two gallons of water. 



Tobacco Wash (for destroying Aphis). 



Soak 4 pounds of tobacco waste in 9 gallons of hot water for four or 

 five hours (in cold water for four or five days) ; dissolve one pound of 



