New York Agricultural Experiment Station. 391 



mixture thoroughly stirred. After the lye has been added, add 

 4 more gallons of hot water and allow the whole mass to boil 

 until the mixture will unite with cold water, making a clear, 

 amber colored liquid. 3 When through boiling if there is not five 

 gallons of the mixture add water enough to make that quantity. 



Solution for use. — 



Resin mixture (stock solution) 1 gallon. 



Water 16 gallons. 



Milk-of-lime 3 gallons. 



Paris green 1-4 pound. 



To 1 part of the resin mixture add 16 parts of water and 

 3 4 parts milk-of-lime 5 or whitewash, after which add Paris 

 green, or other arsenites, at the rate of 1 pond to every 80 

 gallons of the resin lime mixture. Resin lime mixture should 

 only be prepared as used. If allowed to stand any length of time 

 it will settle. The resin mixture is in reality a liquid soap, and 

 when milk of lime is added to the diluted resin mixture the lime 

 flocculates, or forms a hard soap of the saponified resin, which 

 floats in the water. When Paris green is added the particles of 

 the latter adhere to the flocculated resin and the mixture remains 

 suspended in the water nearly as well as does Bordeaux mixture. 

 If the milk-of-lime is added to the undiluted resin mixture a 1 > avy 

 precipitate is formed. This not only settles rapidly, but it al$o 

 gums up the valves and plunger of the pump and clogs the nozzles 

 of the spraying outfit. 



3 If the mixture is added to cold water before all the resin has been sponified 

 it will form a stringy mass in the water. 



4 In previous report it was recommended that 4 gallons of milk-of-lime 

 be used. This quantity of lime flocculates nearly all the resin soap in the 

 mixture. It has been found best to have an excess of the resin mixture, hence 

 less milk-of-lime should be used. 



5 Milk-of-lime is made by slaking a quantity of stone lime of the best quality 

 and adding enough water to make a thin whitewash. 



