113 



Association and, if practicable, publish as a conjoint work in each of the stations 

 where the insects have been studied, or a condensed summary of the results showing 

 all points which have been decided by the agreement of observers at different points 

 which are still in doubt or upon which observations still differ, and especially such 

 points as indicate variation due to climatic or other physical conditions; that spe- 

 cies in certain groups be selected from year to year for the purpose of obtaining 

 their geographic range, their ability to extend their range, and especially with 

 reference to invading species to determine the rate of progress, indicate the time at 

 which they may occur in various portions of the country, determine their relation 

 of distribution to food plants; such observations to be arranged for publication by 

 the committee or some member of tlie Association selected by them. 



That the Committee on Cooperation on Insecticides and Insecticide Machinery 

 ai range for the joint tests of insecticides under the following regulations or such 

 modified rules as may be deemed from time to time desirable in order to more 

 effectually provide for thorough test of these materials. 



WORK ON INSECTICIDES. 



That the Association prepare and publish a list of recognized valuable insecti- 

 cides, with condensed formula', for preparation, which may be considered as author- 

 itative, and, if desired, can be published in the bulletins of each station. That this 

 list be enlarged as experience warrants, any new combination or preparation pro- 

 posed by official entomologists being added after trial and recommendation by at 

 least three members. 



That insecticides protected by patent or trade-mark be recognized and admitted 

 to the list on the following conditions: 



That the policy of the Association be to encourage the invention of insecticides 

 and their sale by private individuals or corporations, inasmuch as private enterprise 

 may often reach and help those who give little heed to official reports. 



That no such proprietary insecticide be recommended or placed on the Association 

 list until it has received sanction of the requisite committee or number of mem- 

 bers, such sanction taking into account the effectiveness of preparation for purposes 

 claimed by manufacturers and its cost as compared with standard preparations or 

 the cost of its probable ingredients. 



That at any time when there is reason to believe, from reports of users or other- 

 wise, that such preparation is not kept up to its original standard, or claims are 

 made for it that are unwarranted, it may be reexamined by use of samples secured 

 in open market, and, if found deficient, the preparation dropped from the list with 

 public announcement of the action and notice to all members of this Association. 



That manufacturers desiring the recognition of the Association shall permit the 

 selection of samples secured at various points in open market and their trial by a 

 committee of three or by three separate stations, who shall send their sealed reports 

 to the proper officer of the Association. 



That the same regulations apply to testing machinery, nozzles, etc., except that in 

 case of expensive machinery different stations may combine to share expense or, 

 with proper care to secure the grade of apparatus regularly put on market, machin- 

 ery may be received by loan from manufacturers for experiment, the results to be 

 received by the Association. 



The Committee on Legislation shall agree upon some form or act which may be 

 considered as applicable to the majority of States and direct their efforts to secure 

 the adoption of such laws in the various States, it being the opinion of this committee 

 that such laws be made in such form as to apply to common destructive species for 

 which well-known remedies can be prescribed, and that the experiment stations in 

 each State should issue from time to time, as occasion might require, bulletins con- 

 taining a copy of the State law, a list with concise description of those insects 

 recognized as public nuisances and for which definite and effective measures of 



