N. J. Mosquito ExTERMmATioN Association 69 



orders for machinery and supplies from your New Jersey fac- 

 tories, and that this same prevalence of malaria in the South re- 

 duces the attendance at your summer resorts of people from that 

 region. 



As to the paper which I am to present, Mr. Chairman, I have 

 spoken to this association on several occasions about the work 

 which the Bureau of Entomology is doing at Mound, Louisiana. 

 This work is agricultural, economic and biological, and the idea 

 is to find out what malaria costs the big plantations of the South, 

 how it can be prevented, and thus save the enormous expense 

 which it brings about. 



I did not write the paper which I am about to present ; it was 

 drafted by Capt. D. L. Van Dine, who has charge of the work 

 at Mound, and it deals with only one small aspect in the big 

 problem which he is trying to handle. Captain Van Dine began 

 this work before the war. When this country went into the war 

 he volunteered his services and was put in charge of the sanita- 

 tion of the large concentration camp at San Antonio, Texas — 

 Camp Travis. There he worked hand in hand with Mr. Delaney, 

 of this association, who had charge of the work of the public 

 health service in the region, three miles wide, bordering the 

 camp. After the troops left San Antonio, Captain Van Dine 

 was transferred to New York where he was engaged in delous- 

 ing the troops coming back from Europe. While he was absent 

 fronii Mound the work there was not actively continued, but 

 after the close of the war he returned and the work is now being 

 prosecuted. 



This particular paper is an abstract of a report on impound- 

 ing the water in a large bayou to control' the breeding of 

 Anopheles. 



Abstract of a Report on Impounding Water in a Bayou to 

 Control Breeding of Anopheles. 



D. L. Van Dine, 



Entomologist, Bureau of Entomology, U. S. Department of 



Agriculture. 



The bureau of entomology has completed an investigation re- 

 lating to the question of controlling the breeding of Anopheles 

 mosquitoes in a bayou by clearing the vegetation and impounding 

 the water. The work was located on Hecla plantation, at Mound, 

 Madison Parish, northeast Louisiana. The following is an ab- 

 stract of a report dealing with the natural conditions of the bayou 



