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eveu if it be not educational to students or visitors, it is oertainlj^ edu- 

 cational to the workers at the station themselves, and by continually 

 adding to such a collection the}^ are adding to their education as well 

 as to the education of the residents of the region. He had thus far 

 found a great demand for collections rather different from those ordi- 

 narily met with. The ordinary collection contains the rare insects as 

 frequently as it does the destructive ones, and by that he meant to 

 uphold the question that was raised in the address with reference to 

 how many of the common insects could be found in different collec- 

 tions. He suggested, that so far as his own experience goes, there 

 are too few collections in which all stages are preserved in connection 

 with the work that insects do. A large part of the material that he 

 receives in Massachusetts does not contain any insect whatever. ])ut 

 simply a sample of the work of the insect which has either escaped 

 from the box or was never inclosed. The problem in such cases is to 

 tell what has done the damage by the damage itself. He found that 

 his greatest help was to preserve specimens of the insect and of the 

 work it was doing, and he used such specimens in the identification of 

 msiterial sent in perhaps fifty times as often as anj'^ other specimens. 

 Our collections, in his opinion, should be amplified along the lines of 

 earlv stages and the work done by the insects, and such collections 

 will appeal strongly to the people. The whole address was interesting 

 and suggestive, but it was this feature which interested him most. 

 He had also had experience with the Murgantia parasite obtained from 

 Louisiana by the kindness of Mr. ^lorgan, and while he was now for- 

 tunate in not having Murgantia to deal with, it was a great relief 

 while searching around to find that there was some one who could 

 assist him, and he thought au^^thing in that line should be encouraged, 

 for when a man wants a thing of that sort he Avants it badly. 



]SIr. Johnson said there was another important suggestion implied 

 in the address, and that was the commercial side of entomology — if the 

 term might be permitted. We have enough systematic entomologists 

 at the present time, and perhaps enough economic entomologists, 

 but we do need another lot of men who will take up purely the 

 oecological side; that is, the}^ must study conditions in the field. The 

 day is coming, and is not far distant, when our great commercial railroads 

 and some of our greatest manufacturing concerns, such as canneries, 

 will (Miiploy fecological entomologists just as they employ engineers 

 and other skilled lal)or. He felt quite certain that this would come 

 about, and that a ne\\' field would open to young men especialh' who 

 would take up this commercial side of the entomological problem. To 

 give an illustration of what he meant, he said he would try to bring 

 this out in a paper which he would read on the following day on the 

 subject of the pea louse in Maryland, which has destroyed more than 

 lijOOOjOOO worth of green peas along the Atlantic coast this season. 



