26 a EXPERIMENT STATION. [Jan. 







The report points out that chestnut blight is spreading, but 

 expresses the opinion that the disease is held somewhat in check 

 by natural causes, probably climatic. 



Attention is called to a number of diseases, new (so far as 

 known) in this State, the seriousness of which is not at present 

 understood. 



The Entomological Department. 

 The entomological department has published one bulletin 

 during the year, No. 157, " The Marguerite Fly." This bulle- 

 tin gives an account of the life history and habits of this highly 

 injurious insect, and discusses methods of control of this serious 

 greenhouse pest. The author recommends spraying with nico- 

 tine solutions. " Black Leaf 40," diluted with 400 to 450 parts 

 of water applied at intervals of about twelve days (or oftener 

 if the temperature of the greenhouse is unusually high) has 

 proved effective with Marguerites. 



The Horticultural Department. 



The horticultural department has published one bulletin 

 during the year, jSTo. 159, " The Technical Description of 

 Apples." This bulletin calls attention to variety characters 

 which the writer believes will prove of much value in determin- 

 ing varieties in the absence of specimens of fruit. The methods 

 of determination proposed are based in considerable measure 

 upon leaf characters, and the bulletin should prove a valuable 

 contribution to this important subject. 



The report of the horticulturist, especially that part of it 

 contributed by Dr. Shaw, calls attention to the progress of in- 

 vestigations on the effect of the stock on the scion. Unantici- 

 pated difficulties have been experienced in getting certain 

 varieties established upon their o^vn roots, but such a degree of 

 progress is recorded as will make possible the planting of a 

 considerable proportion of the area available with trees on 

 known roots the coming spring. 



