112 



Mr. Smith thought it woukl be advisable to make tests in the direc- 

 tions suggested, aud also referred to the results of experiments con- 

 ducted by himself against ants with bisulphide of carbon, which 

 indicated that this substance was not necessarily injurious to vegeta- 

 tion; and in fact had resulted in a more healthy and vigorous growth 

 of grass on the soil treated. 



Mr. Davis reported the use of this substance to destroy woodchucks 

 in Michigan. 



Mr. Lintuer made some inquiries as to tlie effect of bisulphide on 

 grain when used in quantity to destroy stored grain pests. 



Mr. Smith replied that the only information he had on this matter 

 was derived from the experiments conducted by Mr. Webster; he had 

 had no personal experience. He said that he ordinarily recommended 

 exposing peas or beans for two hours to the vapor of bisulphide, and 

 that in the case of stored grain, a definite amount be placed on the 

 surface of the grain. 



Mr. Saunders said that seedsmen usually exposed their stock to the 

 vapors of bisulphide for from five to six hours. 



AFTERNOON SESSION, AUGUST U, 1894. 



On motion of Mr. Smith, the reading of the minutes of the morning 

 session was deferred. 



Mr. Smith presented the following report from the committee ap- 

 pointed last year on cooperation among station entomologists : 



EEPORT OF COMMITTEE ON COOPERATION AMONG STATION ENTO- 

 MOLOGISTS. 



Your committee, to whom was intrusted tlie duty of preparing a plan for coopera- 

 tion among the members of the Association and of proposing legislation, would 

 report as follows : 



We would recommend that certain lines of work be arranged for, to be carried on 

 in cooperation, and that in order to facilitate the work in these lines there be three 

 standing committees appointed, consisting of one member each : One to take charge 

 of the subject of Life History and Geographical Distribution; the second to have 

 charge of the subject of Insecticides and Insecticide Machinery; the third to pro- 

 pose Legislation and direct the efforts to secure legislative action. 



DUTIES OF COMMITTEES. 



The Committee on Cooperation in regard to Life Histories and Geographical 

 Distribution shall designate such species of insects as may be determined upon for 

 the joint investigation of entomologists of certain States, having in view the species 

 having wide economic importance .and which it is desirable to investigate in the 

 various States, either because of their local importance or lack of knowledge con- 

 cerning them; that all the entomologists located within the range of such species 

 give as much attention to observations upou them as possible and present the 

 results of these observations at the close of the season to the standing committee, who 

 shall combine such reports into a symposium on the species to be published by the 



