56 N. J. Mosquito Exti:rmination Association 



All this points to . the prime need of more generous state aid, 

 and our strongest efforts should be bent in that direction. 



:^re^sh-water work 



Fresh-water mosquito control is undertaken in six of the 

 counties now at work — Hudson, Bergen, Passaic, Essex, Union 

 and Atlantic. In Bergen, Passaic, Essex and Union a large 

 amount of fresh- water drainage has been undertaken and has 

 consisted mainly in regrading streams and ditches and in cutting 

 new open drains. In Union and Essex a certain amount of 

 under-drainage has been done. In all, a limited amount of hole- 

 filling has been carried out, principally with garbage and soil 

 removed from building excavations. 



The fresh-water mosquito problem throughout the southern 

 half of the state seems to be the control of the house species, 

 while in the northern half the fresh-water swamp mosquito and 

 the woodland pool species are added to the list. The fresh- 

 water mosquito problem in Atlantic County has been simple, and 

 the results of the work highly satisfactory. 



The fresh-water mosquito problem of northern New Jersey 

 is rendered hard by the tendency of the clay soils to hold small 

 pools of water for a considerable period, and by the existence 

 of certain large swamps, which are prolific breeders of the fresh- 

 water swamp mosquitoes. 



We were able at the end of the last season to say that ap- 

 proximately 50 per cent of the total number of reasonably per- 

 manent mosquito breeding places had been eliminated in one 

 way or another. The same process has gone on this year, but 

 the data on the exact percentage eliminated are not at hand. 



MOSQUITOES ON THE WING 



The reason of 191 7 has been, as a result of weather condi- 

 tions, a prolific breeder of mosquitoes. The salt-marsh species 

 w^ere dominarit in the southern half of the state along the coast, 

 while the fresh-water swamp mosquito was dominant in the 

 northern section. 



