90 N. J. Mosquito Extermination Association 



cases in 1916; about 1,400 in 1917, when the work began; and last 

 year there were only 83. 



Now I can quote town after town and locality after locality, and 

 we can prove to you conclusively that mosquito eradication is the 

 only means* by wihich malaria control can be made effective, that 

 all reliance upon quinization, upon quinine immunity and quinine 

 prophylaxis are practically hopeless by way of control. They have 

 carried on such work in the Yazoo Delta. They are now and have 

 been satisfied ; they seem to be very well satisfied for the time being 

 in some counties. But it strikes me as perfectly absurd to con- 

 tinue an existing condition which gives rise to the fever and to 

 meet it by remedial measures which must forever be continued 

 if you wish to keep malaria to the minimum; whereas, if you 

 merely remove the conditions which give rise to it, which is shown 

 in these communities to which I have referred, and as was done 

 at Panama, and as was done later on in Macedonia, you really 

 eliminate the cause, and you save all the money you spend on 

 quinine and all the suffering that goes with it. For it is not a light 

 thing to carry on quinine immunization effectively. It is a wtry 

 serious matter, and most of all with native populations. 



Another interesting illustration of the economic side of this 

 question — and I always like to emphasize that, because if you 

 cannot prove that it pays, you have difficulties in raising the money 

 behind it — in the southwest, the Southwestern Railway, of which 

 Mr. Edwin Gould is President, have made appropriations for sev- 

 eral years, and malaria, which was a very serious evil among railway 

 employees in that section, has been virtually reduced <to negligible 

 proportions. 



President Engle: The next paper is by Mr. Reiley. 



