CEREALS 347 



On a large scale oats have been treated by the formalin 

 method at the rate of 500 bushels an hour, by throwing the 

 formahn solution, by means of a steam pump, against the 

 grain as it fell through elevators arranged with deflectors so 

 as to give proper mixing. 



The Sar (sulphur, alkali, resin) solution has the ad- 

 vantage that the necessary ingredients can be procured at 



Fig. 148. — Outfit and mat for preparing Sar solution. After Swingle. 



places where it might be difficult to buy formalin ; other- 

 wise formalin is preferable. 



To make the Sar treatment, take one half pound of or- 

 dinary resin and powder it finely, then mix thoroughly with 

 15 pounds of ordinary flowers of sulphur. When thor- 

 oughly mixed add, little by little, about six quarts of water, 

 stirring all the time. At first the mass crumbles when 

 stirred, but when the right amount of water has been added, 

 the sulphur and resin make a stiff paste, which does not 

 crumble or flow. Too much water must not be added. 

 This paste should be made in the bottom of a barrel or 



