THE DISEASES OF FRUITS. 215 



Remedies. Several of the Experiment Stations have been 

 making extensive tests of remedies for the apple scab, per- 

 haps none more satisfactorily than the one at Geneva, New 

 York. Three sprayings with the Bordeaux mixture are rec- 

 ommended: the first between the breaking of the bud and the 

 opening of the blossom, followed by the second shortly after 



FIG. 280. An Apple, showing the blotches and distortions produced by the 



Apple Scab. 



the petals have fallen, and the last about. two weeks later. 

 It is seen by this that the attack of the fungus, upon the fruit 

 at least, is chiefly while it is young. Later on the skin be- 

 comes smooth and tough, and a foothold is not likely to be 

 obtained. 



The Bordeaux mixture now generally employed, after ex- 

 tensive experiments extending over several years, is as fol- 

 lows : 



Copper sulphate (bluestone), . . .6 pounds 

 Quicklime, . . .. . . . 4 " 

 Water, . . . . * . . .60 gallons 



Slake the lime with hot water and strain through coarse 

 cloth or sacking. Place the copper sulphate in a bag of sim- 

 ilar material and suspend it over night near the surface of a 



