EXPERIMENT STATION REPORT. 643 



represented, also, and the question was where did they come from. 

 There are no large breeding areas, so there must be local condi- 

 tions on enclosed property, which are only within the jurisdiction 

 of the health officer. 



August 2 2d, on another visit, breeding places within the town 

 limits were sought out and quite a number were found — some in 

 pools in depressed lots, but more in gutters, where larvge and pupse 

 were plentiful. The excess of rain, which kept such places con- 

 stantly full, Avas responsible for much of the mosquito trouble. 

 The vast majority of the adults were of the salt marsh species, 

 however, and representatives of brood 6, which was just out from 

 the Jersey City meadow. 



A report of all our findings was duly transmitted to the board 

 of trade, at their request, and will form the basis of whatever 

 positive action is taken in the case. 



Lake Hopatoong. 



This pretty lake is becoming increasingly popular each year, 

 and not only are hotels and other resorts becoming more numerous, 

 but camps have been and are being established in the woods round 

 about. Complaints of mosquito troubles are occasionally received, 

 but the general belief seems to be that the lake itself is responsible, 

 and that therefore nothing can be done — that it is simply one of 

 the drawbacks inseparable from any body of water, l^othing is 

 further from the truth, and it had been intended to keep a rather 

 close watch on the locality during the summer. This proved to be 

 impossible, owing to press of other work. 



Two days' collecting was done — May 5th and 6th — by Mr. 

 Grossbeck, on the east side of the lake, through the swampy area 

 and among such w'oodland pools as were found. Larvse of Ano- 

 pheles and C. sylvestris only were found on this trip, which was 

 too late for the spring forms, and these larvae were in a single 

 pool close to an open field. Xeither of these species are true woods 

 mosquitoes, and frequent either open areas or get as near to them 

 as they can. As to the adults, C. aurifer was very abundant and 

 in good condition in one section of the woods. During a rest of 

 twenty minutes twenty examples were taken and pinned, out of 

 the hundred or more that were hovering about — and not only 



