32 a EXPERIMENT STATION. [Jan. 



Department of Entomology. 



The work in this department has followed about the usual 

 lines, but especial attention has been directed to the study of 

 such insects as reports and correspondence indicated were prov- 

 ing injurious to an exceptional degree in all cases in which the 

 life histories of these insects and satisfactory means of prevent- 

 ing injury were not already known. Correspondence indicated 

 an exceptional degree of injury from the work of plant lice and 

 scale insects. Fairly satisfactory remedies for these are already 

 know^n. 



The fact was brought to the attention of the department 

 that the red spider was doing an immense amount of dam.age to 

 hothouse cucumbers, and as no satisfactory methods of preven- 

 tion were known, a graduate assistant has begun a special in- 

 vestigation. 



During the summer the fact was brought to our attention 

 that the larvae of an insect which proved to be the strawberry 

 crown girdler was doing very great injury to young white 

 pines in the forest tree nurseries of the State. The value of the 

 stock destroyed in one of these nurseries was estimated to be 

 no less than SI 5,000. The insect attacked not only the white 

 pine but other conifers, which were completely girdled at a dis- 

 tance of from one to three inches below the surface of the 

 ground, and occasionally attacked even sugar maples as well. 

 Methods of treatment which it is believed will be quite effective 

 in protecting from a similar attack next year were suggested 

 and put into operation. 



The head of the department calls attention to the vital need 

 of additional assistance in order that more satisfactory service 

 to the agricultural interests of the State may be rendered. 



Department of Veterinary Science. 

 The general lines of investigation in this department have 

 been similar to those to which attention has recently been de- 

 voted. Principal emphasis has been laid upon a continued 

 investigation of bacillary white diarrhea and methods of its 

 elimination from the flocks of the State, and the use of serum 

 for the prevention of hog cholera. One new line of investigation 



