1903.1 PUBLIC DOCUMENT — No. 33. ^5 



REPORT OF THE E:N^T0M0L0GISTS. 



C. H. FERNALD, H. T. FERNALD. 



During the year 1902 the work of the entomok)gical divi- 

 sion has been concentrated along a few but important lines. 

 The correspondence has, as usual, occupied much time, and 

 a large portion has been of a routine nature. This part of 

 the work is of great importance, and it has been tlie in- 

 tention to give the most careful attention to every letter 

 received, however common the insect concerned may be, as 

 the greatest amount of assistance is often needed in order to 

 effectively combat the most common forms. 



Extensive experiments on the best methods of treatment 

 for the San Jose scale under New England conditions have 

 been carried on in the college orchard during the year. 

 Over six hundred trees have been treated in different ways, 

 and the results studied by means of repeated inspections 

 during the summer and fall. A discussion of this work and 

 its results thus far is now being prepared for publication as 

 a station bulletin. 



Much attention has also been given to the preparation of 

 the early stages of insects for the insectary collection. As 

 in most cases the injuries caused by insects are while the 

 latter are immature, the importance of representing all 

 stasres in a collection at once becomes evident. In connec- 

 tion with the additions thus made, an extensive rearrange- 

 ment of the collection has been begun, the result of which 

 will be to make it more instructive and available for direct 

 study and comparison than ever before. Many records and 

 life histories have also been added to the insectary files. 



Work on the card catalogue, referred to in previous re- 

 ports, has been continued, and the value of the catalogue as 



