444 ■ '^^'^' ECONOMIC ENTOMOLOGY. 



over add two pounds more. If the mixture has not then reached 

 a brick-red color add the remainder. Care must be taken not to 

 use more water than necessary, otherwise the combination will be 

 delayed. When the proper color is obtained, add warm water 

 enough to make fifty gallons and use at once. 

 A Georgia modification is as follows : 



Stone lime i6 pounds 



Sulphur flowers 8 pounds 



Caustic soda, 75 per cent, or over 8 pounds 



Water 50 gallons 



Mix the sulphur into a thick paste with a small amount of boil- 

 ing hot water. Then add the caustic soda slowly, in lumps, 

 keeping the mixture thoroughly stirred. Continue the addition 

 of the soda and the stirring, adding hot water as may be neces- 

 sary to prevent the mixture from getting too thick. The soda 

 should dissolve all the sulphur in a few minutes, producing a 

 clear, deep red liquid ; if it does not, heat until no part of the 

 sulphur remains undissolved. To this clear liquid add the lime, 

 and while it is slaking keep well stirred. The compound mixture 

 will have the characteristic greenish-yellow tinge, and may then 

 be diluted with water to make up the fifty gallons for immediate 

 applications. 



Yet another formula, originating in New York, is as follows : 



Lime 20 pounds 



Sulphur flowers 15 pounds 



Sal soda 10 pounds 



Water 50 gallons 



Put five or six pails of hot water in a barrel, add the lime, fol- 

 low quickly with the sulphur and sal soda in the order named, and 

 stir until slaking is completed. Add a little cold water, if neces- 

 sary, to keep the mixture from boiling over. When the boiling 

 IS done cover the barrel with burlap and allow it to stand half an 

 hour or more; then strain 'and dilute with fifty gallons of cold 

 water. 



The simplest combination is to use two parts good stone lime 

 to one part of flowers of sulphur ; place the lime in a barrel ; 

 make the sulphur into a thin paste with hot water and pour over 

 the lime ; add hot water enough to slake thoroughly and cover 



