62 Prockedings of Ninth Annual, Meeting 



Mr. Jackson — It is hardly necessary, Mr. President, to reply 

 to our esteemed friend. 



President Meyers — Well, you will be heard in rebuttal. 



Mr. Jackson — I have not raised the question of the feasibility 

 of these collections in my brief. I can readily believe that if you 

 are standing on the edge of a pond where wrigglers can be seen, 

 and you are willing to wait until they mature and get on the wing 

 and they are then taken by your night collectors, you no doubt will 

 conclude and say they came from that pond. My idea is that if 

 you now know that they came from that pond (through night 

 collectors), you should have been able to destroy them before they 

 g^ot out, through inspection. 



Secretary Headi.ee— Mine, too. 



Mr. Jackson — Put your energy and your expense on ascer- 

 taining where these things are before they become a nuisance; 

 do not wait until they become a pest and then try to find out 

 where they come from, with the idea of applying a remedy against * 

 further escape, which remedies you should have applied to destroy 

 the larvae in the first instance. 



That is the substance of my view, that where your remedy is 

 going to be the same, in any event, whether you find them before 

 they get out or after they get out, then I say you might as well 

 apply it first and be done with it. 



THURSDAY AFTERNOON SESSION. 



(The meeting convened at 2:45 President Charles Lee 



Meyers presiding.) 



President Meyers — I have purposely delayed the meeting so 

 as to give all the members a chance to get something to eat. 



The next paper will be read by Mr. Joseph A. Le Prince, who 

 needs no introduction tO' this -audience, so I shan't make any 

 remarks except to say that Mr. Le Prince is the man who, under 

 Gorgas, cleaned up the mosquitoes in the Panama Canal Zone, 

 and is now in charge of the anti-mosquito work of the United 

 States Public Health Service. 



I take pleasure introducing Mr. Le Prince, who will talk on 



Interesting and Important Phases of the Anti-Mosquito Work 

 of the United States Public Health Service. 



Mr. Joseph Le Prince— Mr. Chairman and Gentlemen: 

 When we started to do our work in this country we thotight we 



