EXPERIMENT STATION BULLETINS. 



355 



PREPARATION OF SPRAY MIXTURES. 



STRONG LIME-SULPHUR. 



Strong lime-sulphur to be used on dormant trees or bushes for scale 

 insects, can be prepared in three ways: 

 By the old formula, 



By reducing with water "the home-made" concentrated wash. 

 By reducing with water the "commercial" concentrated wash. 



A HOME COOKING PLANT. 



An outfit for the cooking of the lime-sulphur at home. Water supply tank on the left. The 

 cooking is done in barrels into which are extended perforated steam pipes. The steam is sup- 

 plied by traction boiler. 



The "Old formula" has been used for many years with good results 

 and is very satisfactory. The formula is as follows: 



Lump lime 20 pounds 



Sulphur (flour) 15 pounds 



Water (hot) to make 50 gallons 



The lime is slaked Avith a small nmount of water (hot if lime is 

 sluggish) and the sulphur is added, fifteen or twenty gallons of water 

 are then added, and the mixture boiled. (It should take three-quarters 



