MOSQUITOES AND YELLOW FEVER 131 



to prove," etc. The Americans were after the truth, and 

 had no desire to learn anything but the truth, that is to 

 say, they did not endeavor to substantiate any particular 

 theory. 



As a result of the investigations, the Governor-General 

 of Cuba, himself a medical man. General Leonard Wood, 

 became so impressed Avith the accuracy of the conclu- 

 sions that he authorized the promulgation of instructions 

 to commanding officers in Cuba, relative to protection 

 against mosquitoes and remedial measures in connection 

 with their breeding-places. General orders were issued 

 requiring the enforcement of the use of mosquito bars in 

 all barracks, and especially in all hospitals, and the de- 

 struction of the larvaj by the use of petroleum on the water 

 where they breed. (See Chapter VIII.) The medical offi- 

 cer who makes the sanitary inspection at each post is 

 charged with the supervision of the details of these pre- 

 cautions. As a result, the writer understands that the 

 prevalence of malaria has been greatly reduced in western 

 Cuba, and it is hoped that with regard to yellow fever 

 similar results will be shown during the coming year. 



The Yellow-fever Mosquito. 



The particular species of mosquito Avhicli was used by 

 Dr. Finlay in his original experiments, and which is the 

 only form which has been shown by our Army Commis- 

 sion to transmit the disease, is the one which has been 

 referred to in this country as Culcx fasciatus Fabricius. 

 It was so termed in the writer's bulletin, entitled "Notes on 



