CHEMICAL FARMING 



235 



equipped with the right kind of scale and used to 

 this kind of work to compound them. 



Ca (NO.), 

 KNO 8 

 MgS0 4 

 KH 2 P0 4 



6 Ibs. 13.5 oz. 

 



' 



i c , . A 

 \ Solution A 



Lin Avoirdupois 

 ^ or 1 > oo g 



Solution B 



in Avoirdupois 



for 1,000 gallons. 



Use one part to 

 1,000 or mix B 

 solution in one 

 gallon and use 

 only 5 cc. to 25 

 gallons of A. 



It is very difficult 

 to mix a small 

 quantity of B for 

 25 gallons. 



A solution of Iron Tartrate or Iron Chloride 293 

 gr. to i gallon of water is added in proportion to one 

 tablespoon full to 100 gallons of combined "A" and 

 "B" at first, and more from time to time as needed, 

 enough to keep leaves a healthy green. Check solu- 

 tion for pH with litmus, if too acid add KOH or 

 CA(OH) 2 . 



The Anthony Co., of Streator, 111., make an ex- 

 cellent tank with a float valve and the tanks may be 



