EARLY CELERY 129 



quantity of stock solution of both the copper 

 sulphate and the lime. Accuracy in this 

 work is very important. 



If two 5o-gallon barrels are available, 

 place in each 40 gallons of water; in one 

 barrel suspend a sack containing 40 pounds 

 copper sulphate; do not allow the sack to 

 rest on the bottom of the barrel, but keep it 

 near the top of the water. In this way, the 

 crystals of copper sulphate will dissolve 

 quickly. Next weigh out 40 pounds stone 

 lime, and after carefully slacking it by add- 

 ing water (taken from the second barrel), a 

 little at a time; pour into the other barrel. 

 According to the preceding, i gallon of the 

 stock solution will contain either I pound of 

 copper sulphate or lime. . 



One of the most important points in mix- 

 ing these two solutions is just how to put 

 them together. It has been found after a 

 long series of tests that the best bordeaux 

 is obtained by first diluting separately the 

 two solutions. The mixing should then 

 follow while the two solutions are running 

 into the spray tank simultaneously, allowing 

 both to pass through a sieve 3O-mesh to the 

 inch, to remove coarse particles. The prin- 

 cipal object gained by this attention to mix- 



