72 N. J. Mosquito Extermination Association 



County oil was used intensively for the suppression of fresh-water 

 breeding in the towns and cities. In all it may be said that approxi- 

 mately 1,400 barrels of oil were spread for mosquito control in the 

 season of 1919. 



About five thousand acres of salt marsh hitherto untouched were 

 drained and a very large but at present indeterminate acreage of up- 

 land swamp was drained. 



Not more than one-half as much salt marsh was drained this year 

 as has been accomplished in previous years and the amount of upland 

 drainage in many counties was reduced, because of the great increase 

 in the price of labor and the lack of corresponding increase in the 

 appropriations. Another factor which tended to reduce the amount 

 of new permanent work was the unusual cost of temporary elimina- 

 tion, due to the almost continuous and heavy rainfall during late 

 July and August. 



eesults accomplished 



While the towns and villages of the state as a whole outside the 

 protected area were heavily infested with mosquitoes during the 

 latter portion of the summer, the mosquito pest within the protected 

 area was very materially reduced. Indeed, many of the small towns 

 and one or more of the largest cities experienced less trouble from 

 mosquitoes last year than has been the case in the past ten years. 

 In this connection, it is worth while pointing out that throughout 

 the vast bulk of the great city of Newark the mosquito pest during- 

 1919 was chiefly notable for its absence. Of course, here and there 

 in the infested district, on account of conditions which the anti- 

 mosquito forces could not overcome, mosquitoes became more or less 

 troublesome. Taking the season as a whole, however, it can be said 

 that the mosquito protection offered during the past year was per- 

 haps better than that which has been offered in any year heretofore. 

 Last year, in the latter part of the season, mosquito breeding condi- 

 tions throughout the state were perhaps as good as they have ever 

 been and the results above mentioned have been accomplished in 

 the face of most difficult conditions. 



In most of the counties not a single brood of salt-marsh mos- 

 quitoes of any. size emerged during the season, and in such of the 

 other counties as have their marsh approximately covered with 

 drains the brood or broods which did escape were not large nor long 

 continued. In the salt-marsh counties where no attempt was made 

 to control the breeding the emergence of mosquito broods began 



