166 THE CULTIVATED EVERGREENS 



gallons of lime are added and the whole thoroughly stirred. 

 The mixture is then ready for use. 



Self -boiled lime-sulfur is prepared by placing eight pounds of 

 good stone lime in a container and adding suflScient water to 

 start it slaking. Eight pounds of sulfur are then added slowly, 

 working it through a sieve to break down the lumps. The lime 

 should be prevented from burning by the addition of water, 

 but care must be taken not to drown it. When the slaking is 

 complete, the container is filled up to fifty gallons and the 

 mixture strained through a sieve of twenty meshes to the inch. 

 This solution may be used in cases in which bordeaux mixture 

 causes injury to the foliage. While applying, the mixture 

 should be constantly agitated, as it settles out very rapidly. 



Copper-lime dust and lime-sulfur dust may be obtained 

 from manufacturers of fungicides. They have the same value 

 as the sprays mentioned above, but are applied in the dry form. 



"Flowers of sulfur" or finely -ground sulfur flour may be 

 used in the case of superficial fungi, such as the mildews. It 

 should be dusted over the affected parts when they are wet. 

 It is most effective in hot, dry weather. 



