270 Insects and Sprays 



make 25 gallons; dilute the copper solution with 

 enough water to make 25 gallons and pour it 

 slowly into the lime mixture. 



Self -Boiled Lime-Sulphur 



Place 8 Ibs. of fresh stone lime in a barrel and 

 slake, using no more water than is necessary. As 

 soon as the heat has generated, sift in 8 Ibs. of sul- 

 phur flour and stir into the lime solution thoroughly 

 gradually adding more water to make a thick paste. 

 Heat for fifteen minutes, then cool by adding more 

 water. Strain into a barrel and add enough water 

 to^make 50 gallons of the mixture. 



Potassium Sulphide 



Dissolve three ounces of potassium sulphide in 10 

 gallons of water. 



Corrosive Sublimate 



Dissolve 2 oz. of corrosive sublimate in 15 gal- 

 lons of .water. (Very poisonous.) 



Formaldehyde Solution 



For spraying potatoes, I Ib. of formaldehyde to 

 30 gallons of water. 



