6o Procekbings of Nioth Annual Me^e:^ing 



sis with the view of effecting an immediate remedy upon obtain- 

 ing proof of the need. The night collection theory presupposes 

 failure to inspect, and in consequence an escape, and when the 

 locality of the escape has been decided upon, it will receive the 

 same remedy as that of the former plan. But, no matter which 

 of the plans is put to use, an examination should be made of the 

 larvae to ascertain if, as adults, they will "carry disease or be- 

 come annoying by their bites" before any '^useless labor and 

 expense is incurred." The water inspection plan requires this 

 examination. 



The night collection plan should also approve it, because to 

 blindly destroy right and left, no matter what, is contrary to our 

 authority. Manifestly, therefore, the night collection plan must 

 include the examination of larvae in order to intelligently accom- 

 plish its purpose, and as the remedy, when applied, is the same 

 in either case, it must follow that the time of applying the 

 remedy, being the essence of the undertaking, is the factor which 

 must aid in determining which of these two methods is the most 

 effective as a means of prevention. 



A proper designation of these methods would be to call the 

 constant water inspection plan "ante-escape remedy" and that of 

 the night collection, "post-escape remedy." 



• The former has the advantage of having a fixed policy estab- 

 lished with a minimum chance of escape and of having its cost 

 definitely ascertained in advance, while the latter with all the 

 difficulty of evaluating correctly the many factors necessary to 

 obtain results, even though reliable as a medium of detection, 

 would, it is believed, entail greater cost with less effect, especially 

 so when the preventative remedy is applied after an escape. 



On account of the limited amount of money obtainable for 

 extermination work, it would seem fair to conclude that the 

 method of destroying the mosquito- before it has had an oppor- 

 tunity to get in its deadly work, is more effective as a nuisance 

 preventative and more in the line of a, measure of extermination. 



Secretary HeadlEE — The only thing wrong with Mr. Jack- 

 son's idea, as I see it, is that he assumes that it is either one 

 type of effort or the other. As a matter of fact, from my point 

 of view, these two schemes are not opposed in any way. They 

 are complements of the same scheme. Our common practice 

 is to inspect, by a body of men, the territory which we are try- 

 ing to protect and to find all breeding that is there, and destroy 

 it of course, where it is found. That is a primary basic pro- 

 cedure. 



