EXPERIMENT STATION REPORT. 619 



It was estimated that 75 per cent, of the insects were cantator and 

 25 per cent, were sollicitams. A month later no breeding was found 

 anywhere on the meadow. 



August 12th, an inspection was made in the southwestern ]3art of 

 the city to locate breeding places of C. pipiens, and several cellars 

 of houses in course of erection were found filled with water and 

 swarming with larvse and pupaB. This had been cured on the 24th, 

 and the filling of pools and similar places was continued. 



August 25th, no breeding was found in any of the public parks 

 and in Branch Brook only a few cantator were discovered, obvi- 

 ously migrants from the Jersey City meadows on a northeast wind 

 of several days' duration. 



August 29th, the marshes were dry and safe, except on the 

 Ebeling tract, wdiere a few larva:-, were found, and even there 

 nothing was found September ISth. On the 19th a toiir of the 

 city showed that the board of health inspectors were still running 

 down and eliminating local breeding places and that conditions 

 were everyAvhere better than ever before. 



September 2 2d, the first high tide of the fall came in and the 

 meadows, which were dry in the morning, were completely flooded 

 soon after noon, but with the flood came the "killies" in shoals to 

 take care of any larva? that might hatch. 



October 1st, it was found that another railroad spur was being 

 built without regard to drainage ; the matter was reported by Mr. 

 Erhard, and the company, in response to orders from the board, 

 built a culvert that preserved the drainage. On the 6th the meadow 

 was in good condition, but it was found that near the boat-houses 

 along the bay shore barrels and boats containing water were swarm- 

 ing wdth larvse of C. pipiens. 



The marsh drainage work has stood the test of a very severe 

 season perfectly, and Newark was freer of marsh mosquitoes than 

 ever before. 



Some sections of the city remained practically free from mosqui- 

 toes until late in the season, while others were severely infested, 

 but in those cases it was the local breeder pipiens that was in fault, 

 and the board of health did excellent work in locating and abolish- 

 ing places that in ordinary seasons would not be dangerous, and 

 are now finally done away with. It was also practically demon- 

 strated that boards of health have ample power to enforce their 



