REPORT OF THE MYCOLOGIST. 



F. C. STEWART. 



L PRELIMINARY STATEMENT. 



During the past year the Mycologist has prepared three bulle- 

 tins. Two of these i>resent the results of experiments made in 

 1895, while in the third are reported some observations made in 

 1896. 



These bulletins are: 



(1) Bulletin No. 100. Combating Carnation Rust. 



(2) Bulletin No. 101 , Potato Diseases on Long Island in the 



Season of 1895. 



(3) Bulletin No. 113. The Cucumber Flea-Beetle as the Cause 



of " Pimply " Potatoes. 



They are republished with this report. 



The work of 1896 has consisted chiefly of spraying experiments 

 on carnations, potatoes and cucumbers, together with laboratory 

 studies on the fungi causing diseases of these plants. 



The carnation experiments were designed to duplicate the 

 field spraying experiments made in 1895 and reported in Bulletin 

 No. 100; but owing to the peculiar weather conditions which 

 prevailed in 1896, the carnation rust* did not appear to any ex- 

 tent in the field, and, as a consequence, the spraying experiments 

 were barren of results. 



The spraying experiments with potatoes were designed to fur- 

 nish data by means of which the expense of potato spraying 

 might be determined and corapared with the value of the in- 

 crease in yield resulting from spraying. Neither of the two 

 common potato blights appeared, making the results of the ex- 



* Uromyces caryophylUnus (Schrank) Schroeter. 



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