ADDENDUM 541 



in foliage a 1-40 to 1-50 solution. It is safer, however, to use the hy- 

 drometer and make a more careiful dilution. 



Self -boiled lime-sulfur (Scott's). — This is not a water-boiled solution, 

 as might be inferred from the name, but a mechanical mixture result- 

 ing from the heating and bubbling of the slaking lime, with but little 

 sulfur in solution; it is therefore specially adapted to spraying of 

 peaches and plums in foliage, for it causes no injury. It is prepared 

 by placing in a barrel 8 lb. best stone lime to which is added a small 

 quantity of cold water to sta.rt the slaking. Eight pounds of sulfur 

 worked through a sieve to break up the lumps is then added slowly to 

 the slaking lime, which is kept from burning by the addition of just 

 enough cold water so as not to drown it. The slaking mixture must 

 be stirred constantly. Just as soon as the slaking is completed (which 

 should be in 5 to 15 minutes) fill the barrel with cold water (50 gal.). 

 The mixture is strained into the sprayer tank through a sieve of 20 

 meshes to the inch. It must be agitated constantly while being ap- 

 plied, as it settles rapidly. Arsenate of lead may be added to this 

 mixture, as to bordeaux. 



