236 The Control of Mosquitoes 



of mosqtiito destruction and control were dis- 

 covered by Dr. L. O. Howard and published by 

 him as early as 1892. This information was of 

 great value to the American officials in Cuba and 

 has since been used extensively in many other 

 parts of the world. In 1892 he published an 

 article in Insect Life on the use of kerosene 

 against mosqtiito larvae; in 1896 in Bulletin No. 

 4, Bureau of Entomology, Washington, D. C, 

 several pages were devoted to the subject of 

 remedial measures against mosquitoes; and again 

 in 1900 in Bulletin No. 25, he published "Notes 

 on Mosquitoes of the United States, Giving some 

 Account of their Structure and Biology, with 

 Remarks and Remedies." In the latter publi- 

 cation he summarized everything which had been 

 done up to that time on the remedial question. 



The first systematic work of mosquito destruc- 

 tion in Havana was started on March 27, 1901. 

 Before this time a considerable number of adult 

 mosquitoes had been destroyed by fumigation 

 directed against fomites. Operations were at 

 first confined to the area lying between Monserrate 

 Street and Havana Bay (see map). This portion 

 of the city was known as the yellow fever district. 

 In this district were the commercial houses, and 

 the hotels and boarding-houses the immigrants 



