MUSQL'ITOKS 



IJ.l 



Canal lias boi'ii iiiadt' [xjssihlc iiiaiiilv llirnip^li iln- coiiirol of 

 malarial and yellow -tVvt'r nios<|iiitoc*s. 



Of tlic ten gi'iK-ra ot uios(|uiioi's ol Noii ii A nu'iica, , [ti'>j,/(, /i y, 

 Acih's (Jie' dez), d\\i\ ( 'i(/r.i {-{nn-vvw us cliictly. riinc an- V\m- 



species of A//'7>/<- 

 r/t's (listiil)ul('(l 



I h roll « 'lion I the 

 fountrv, and it 

 is important to 

 remember that it 

 is throuo'h these 

 mosquitoes only 

 that malarial t"e- 

 \{'V is spread. 

 'I'his disease is 

 not as fatal as 

 some others, hut 

 is important he- 

 eaiise so \\idely 

 distributed and 

 iH'caiise in ma- 

 larial countries 

 from 2o to t5<> 

 per cent of the 

 people are al- 

 Hieted. In tlie 

 United States, 

 according to the 



Kl(.. <»:'.. .l<Wr.s r,iloi,tts— Vi'll..\v-ti'V.'r lii..>.|iiilM 

 Ktr^i. l;ii\;i, pupa, ainl adiill 



estimate of Dr. 

 L. (). Howard, there occur :;,(mu.(l(l0 cases, causin-; a l«».ss ol 

 $10(1,000,000, annually. In India, where the fever assumes a 

 fatal form, 5,000,000 people have succund)e(l to it in one year. 

 Anopheles is particularly active durin*,^ the early part of the 

 nioht. ll niav be distinoinshed from other mosquitoes at a 



