Other screen manufacturers are the Cincinnati Manufacturing Com- 

 pany, the Watson Screen Company, Jamestown, N. Y., and the Roebuck 

 Wire Screen Company of Brooklyn. 



The Invisible Roll Screen Company of East Avenue, Long Island City, 

 N. Y., makes a novel rolling screen, consisting of an all-metal frame, to 

 which rustless wire cloth is attached. It rolls up like a shade and is said 

 not to get out of order easily. When the window is opened, the screen 

 can be rolled up with the sash, and when it is closed, it rolls out of sight. 

 A somewhat similar device is the Jamestown rolling screen, sold by 

 Carroll, Entwistle & Company, 1261 Broadway, New York City. This is 

 fastened both to the window sill and to the sash, and when the window is 

 raised the screen unrolls. The screen is fastened to a patented roller, 

 which is attached to the sill, and when not raised it remains concealed in 

 a light metal box. The screen does not consist of metal wire, but is made 

 of a specially woven fibrous mesh. 



Even the less prosperous farmer can protect his windows with home- 

 made screens of cotton gauze, and he will be amply repaid for the rela- 

 tively trifling expenditure by the increased working capacity obtained from 

 an undisturbed sleep. Many farmers are not sufficiently informed about, 

 and hence not ready to appreciate, the importance of keeping the insect 

 pests out of a house, hence this form of protection against both flies and 

 mosquitoes should be encouraged by experiment stations and by boards of 

 health as a sanitary measure. 



Much more effective work in mosquito extermination can be accom- 

 plished by the combined efforts of farmer communities, and this applies in 

 particular to the salt-marsh mosquito. The wide-awake farmer, who is 

 bent upon securing good results, requires the intelligent cooperation and 

 cheerfully rendered assistance of his neighbors. With this in view, he 

 should endeavor to persuade the owners of neighboring farms to follow 

 his own example in carrying out the individual efforts described hereto- 

 fore. In farm villages, improvement societies should be formed, one of 

 their objects being the organized war against the mosquito pest. The 

 work of such a society should be laid out and directed by one responsible 

 head, and it is desirable that he be a practical sanitarian. Much of the 

 work to be done is of an engineering nature, such as the ditching of 

 marshes, the proper grading of gutters, etc. ; hence the assistance of an 

 engineer familiar with drainage work is much to be desired. A beginning 

 in the work should be made by calling upon each farmer member of the 

 society to make individual efforts about his own premises to get rid of the 

 mosquitoes. Once a week each member should make a thorough inspec- 

 tion of his entire premises with a view of finding neglected spots which 

 might form breeding places, and also with a view to enforcing cleanliness 

 and tidiness. 



Each member should, of course, be required to carry out on his 

 premises the individual efforts recommended heretofore. After that 

 should come the cooperative efforts, comprising chiefly measures directed 



13 



