MOSQUITOES IN GENERAL 27 



was free from mosquitoes, until tlirough cars on the 

 railroads brought tliem up from the vicinity of New York 

 City. 



After the publication of this bulletin some doubt was 

 expressed by the newspaper reviewers of the importance 

 of this method of dissemination ; but confirmatorv evi- 

 dence of a striking character has since been gained, al- 

 though, as a matter of fact, the proposition was so self- 

 evident that it did not need confirmation. The interest- 

 ing commimity work undertaken against mosquitoes by 

 the city of Winchester, Ya., and which will be referred to 

 in detail in the chapter on remedies, has brought out the 

 fact that Winchester Avas at one time a favorite summer- 

 resort, and that mosquitoes were practically unknown, but 

 that with the establishment of a night train on the Balti- 

 more & Ohio Railroad, running from Camden Station, 

 Baltimore, in the summer-time, mosquitoes began to be a 

 positive annoyance in Winchester. Unfortunately, with 

 the establishment of this night train, or about the same 

 time, Winchester extended its system of water-works and 

 did not build sewers. As a result, with the arrival of the 

 mosquitoes from Baltimore there was a plentiful su])ply 

 of standing water all through the city, and conditions 

 were thus perfect for the dcA^elopment of mosquitoes in 

 enormous numbers. 



Mr. C. A. Sperry, of Chicago, who formerly lived in 

 Mexico, has informed me that in the City of Mexico, be- 

 fore the railroads were built to Tanqjico and Vera Cruz, 

 there were no mosquitoes. They were brought up from 

 the coast, however, in the cars, and established them- 



