STATE POMOLOGICAL SOCIETY. 173 



old bark and of fallen leaves and rubbish, it promises to well repay 

 the man who uses it. Alkali, which is largel}^ used for the destruc- 

 tion of orange scale insects, in California, might likewise be tried 

 against this fungus, and experiments with sulphur and lime, when 

 it is likely to do harm in summer, ma}^ yield good results. From 

 the observations of Secretary Garfield it would also appear desira- 

 ble to test the efficacy of protecting the fruit from too strong sun- 

 light. The results of careful experiments in an}' or all of these di- 

 rections will be grate full}' received at the Station. 



The prevention or eradication of this and other fungoid diseases 

 should be understood to demand a rigid application of the principles 

 which govern the rational treatment of the contagious diseases of 

 man and the domesticated animals. Until a proper system of or- 

 chard supervision is adopted, at an}' rate, we must expect that when- 

 ever a favorable season occurs both leaf blight and scab will appear 

 on susceptible varieties and in badly located orchards. In setting 

 an orchard, therefore, care should be taken to choose the greater 

 part of the stock from those hardy, "thick-leaved" varieties which 

 prove most resistant to this disease, as well as to our trying winter 

 and summer climate. 



[From Report of the New York Agricultural Experiment Station, 1885.] 



We made a series of applications intended to prevent the growth 

 of the fungus which produces the apple scab, Fusidadium dendrili- 

 cum Fclk. The tree chosen for the experiment was one of the com- 

 mon Siberian (?) crab that had been very subject to injury from this 

 fungus in previous years. 



On May 5th, we syringed one-half of the tree with a solution of 

 hyposulphate of soda, at the rate of one pound to ten gallons of 

 water, and repeated the application on May 9th and May loth. 



During the summer, the foliage appeared less injured by the fun- 

 gus upon the syringed half of the tree. On September 19, we 

 picked a quantity of the fruits from the syringed part of the tree, 

 and from the part not syringed, and assorted each lot into three 

 qualities. In the first quality we put only the fruits not attacked by 

 the fungus, in the second, those attacked in but one place, and there 

 but slightly, and in the third, those much injured. The results ap- 

 pear in the following table, in which the percentage of the fruits of 

 each quality are given for the syringed and unsyringed part of the 

 tree. We also give the weight of 100 fruits in each quality, as an 

 indication of the amount of injury wrought by the fungus : 



