EXPEEIMENT STATIOX REPOET. 647 



'The partially wooded area south of the railroad called Spout's 

 Spring woods is not a breeder of species which are classed as nui- 

 sances, but in inany of the open spots Anopheles will develop, and 

 it therefore needs some attention. It can be drained by open 

 ditches into the creek. Should work in elimination of breeding 

 areas be commenced by the improvement association, I would sug- 

 gest that this be the last of the places to- be dealt with. 



"The area north of the railroad and west of St. Andrew's ceme- 

 tery has precisely the same conditions as Parson's meadows, and 

 the recommendations given for that territory applies to this as 

 well. 



"Directly to the rear of the Relief Fire Engine House was found 

 a very large pool. This contained millions of Culix pipiens larvae 

 and pupse, and in itself could supply the town of Mount Holly 

 with a plague of adults. Considering the number of broods the 

 pool would develop in one season, the number of individuals in all 

 would run into an unpronounceable row of figures. A series of 

 somewhat smaller pools followed this, and all are dangerous, 

 though all did not contain larvse when examined. 



"The old raceway from the dam to the old gi-ist mill was found 

 to be a prolific source of mosquito breeding, both for Culex pipiens 

 and Anopheles. Large pools have formed in the deeper depres- 

 sions and I understand that these are only rarely connected by a 

 continuous channel of water. The same conditions were found 

 below the gTist mill, where a single dip of an ordinary glass 

 brought uj) a wriggling mass of mosquito larvse. This place, I 

 am informed, is to be permanently remedied by the building of a 

 dam across the Ranoocas creek, thus directing a steady stream 

 of water through the raceway. Until this permanent work can be 

 done, petrolizing the pools at inter\'als of ten days is recommended 

 as a temporary expedient. 



"Kear the Grant street station there is a small, wet area, which 

 was found to be breeding pipiens. This can be drained very easily 

 into the sewer pipe. 



"To the rear of dwellings on Water street, just west of King 

 street, were found many puddles formed by the sewage from the 

 houses. These were simply blackened by thousands of pupse which 

 crowded the surface. There are undoubtedly other such places in 

 the town, as well as open ditches at the sides of the roadway in 

 which surface sewage gathers, and all such give rise to perfect 



