19 



HOW TO MAKE THE LIME-SULFUR WASH. 



The lime used in making tlie wash must be good stone Hme (Mag- 

 nesia lime is not desirable) which is as fresh as possible. Where 

 the lime has air-slaked to any degree results are far less satisfactory. 

 The sulfur should be Flowers of Sulfur or Sulfur flour, the former 

 being the better for the purpose. 



Place six or eight gallons of water in the kettle, start a fire under it, 

 and slake the lime, (22 lbs.) getting this as fine as possible in the slaking. 

 When this is well under way gradually add the sulfur, (20 lbs.) stirring it 

 in well, and keep the fire going to continue the heat begun by the slak- 

 ing lime. Keep the mixture boiling, adding water (preferably hot) 

 from time to time, till it has boiled at least forty minutes and is dark 

 orange red in color. If there seems to be a considerable amount of 

 sediment at the bottom of the kettle this may be taken as an indi- 

 cation, either that the boiling has not continued long enough or that 

 the lime was not of very good quality. When the boiling has been 

 completed strain the liquid into the spray pump barrel through a 

 strainer of copper wire of at least twenty threads to the inch, and 

 add whatever water may be needed to make the fifty gallons or there- 

 about, which the barrel holds. Then spray at once, as in many cases 

 where a lot of the wash has been made one afternoon and sprayed the 

 next morning it has proved less effective, due probably to chemical 

 changes which took place while it was standing. 



That this method of making the wash is inconvenient to say the 

 least, is evident, and experiments which may show that we can do 

 away with the necessity for any boiling are in progress, but the 

 results are not yet available, though it is hoped that they may prove 

 successful. 



HOW TO SPRAY FOR THE SCALE, 



Every scale must be touched by the sprry in order to be killed, 

 but a very small droplet on each will be sufficient. To spray suc- 

 cessfully then, spray thoroughly. 



There are numerous pumps on the market which work well for the 

 purpose. Those which have happened to be used at the Massachu- 

 setts Experiment Station, and which were entirely satisfactory, were 

 the " Pomona " and " Fruitall," made by the Goulds Manufacturing 

 Co. of Seneca Falls, N. Y., and the " Hardie " Pump, made by the 



