DISEASES 53 



lime, adding water until the consistency of paste and painting the steam 

 pipes. The formula given by W. Wells for rust is recommended for mil- 

 dew and doubtless is effective. 



Potassium Sulphide is also highly recommended for mildew and rust, 

 applied to the affected parts at the rate of one GZ. to two gallons of water. 



Many of the private gardeners consider a preparation known as grape 

 dust an excellent preventative for mildew and other fungus diseases 

 which is applied with a bellows or some other air blowing device. 



