loS NOTES ON APPLE AND POTATO DISEASES 



blue vitriol. The purpose of the lime is to prevent the injury 

 to the foliage which a simple solution of blue vitriol would 

 cause. 



The proportion oi the ingredients may be varied considera- 

 bly. The formula which was recommended in Bulletin 27 of 

 this Station still seems to us a satisfactory one, namely : 

 Blue vitriol . . . . . . i lb. 



Lime, fresh . . . . . • /^ " 



Water ....... 10 gals. 



As the quantity most frequently prepared would be a barrel 

 the formula may be given as follows : 



Blue vitriol ... 5 lbs. 



Lime .... 3-g- lbs. 



Water . . . . i bbl. (45 to 50 gals.) 



For the details of preparation see Bulletin No 45 of this 

 Station. 



