1913.] PUBLIC DOCUMENT — No. 31. 97 



AN OUTLINE OF SOME OF THE TOPICS COV- 

 ERED BY THE DEPARTMENT OF VEGE- 

 TABLE PHYSIOLOGY AND PATHOLOGY 

 SINCE ITS INCEPTION. 



G. E. STONE. 



The department of vegetable physiology was established in 

 the State Experiment Station in 1888, and Dr. James E. 

 Humphrey, under the supervision of Dr. C. A. Goessmann, 

 carried on investigations from November, 1888, to 1892, when 

 he resigned. A bibliography of the more important papers 

 published by the department follows : — 



Sixth annual report of (he State Experiment Station, 1888 : potato 

 scab. 



Seventh report, 1889 : general account of fungi ; potato scab ; fungous 

 diseases on the station farm; notes on material referred to the dejDart- 

 ment. 



Eighth rei30rt, 1890: black knot of plum; mildew of cucumbers; 

 brown rot of stone fruits; potato scab; notes on various diseases. 



Ninth report, 1891: rotting-of lettuce; powdery mildew of the cucum- 

 ber; various diseases; preventive treatment. 



Tenth report, 1892: diseases of the cucumber plant and violet dis- 

 eases : the black knot of the plum and cherry ; grain rusts ; various 

 diseases: treatment for powdery mildew. (From 1892, when Dr. Hum- 

 phrey resigned, until 1895, the pathological work was temporarily dis- 

 continued, but in 1895 the department of vegetable physiology and 

 pathology was established and the work has been continued by the 

 writer since that time.) 



Eighth annual report of the Hatch Experiment Station, 1895: this 

 contains mainly an outline of work, and brief references to some experi- 

 ment topics. 



Ninth report, 1896: nature of plant diseases; a bactei'ial disease of 

 the cultivated strawberry {Micrococcus sp.f) ; stem rot of the cultivated 

 aster; leaf spot of decorative plants; leaf spot of Picas elastica {Lep- 

 tostromella elastica Ell. & Ev.) ; a leaf spot disease (Graphiola Phoe- 

 nicis Poit) of the date and similar palms; a leaf spot of the begonia; 



