THE GOOSEBERRY MILDEW 95 



Treatment. Spray with a solution of potassium 

 sulphide (liver of sulphur) at the rate of one-half ounce 

 to one gallon of water. Begin as soon as the leaves 

 commence unfolding, and repeat the application at inter- 

 vals of eighteen to twenty days. The sulphide dissolves 

 more readily in hot than in cold water. This treatment 

 has proven entirely efficacious for a number of years at 

 the New York Experiment Station. Early in the sea- 

 son the Bordeaux mixture may be used instead of the 

 sulphide if more convenient. 



Literature. An excellent article concerning this 

 disease, by Dr. B. D. Halsted, may be found in the 

 Report of the United States Department of Agriculture 

 for 1887 (pp. 373-380). It has also been discussed in 

 the reports and bulletins of the New York Experiment 

 Station, and in various books and papers on horticul- 

 tural topics. 



