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N. J. Mosquito Extermination Association 



From Gloucester to Penns Grove is 20 miles. Including only 

 the territory extending back 4^ miles from the river, there are in 

 this region, according to the United States Geological Survey Maps, 

 along Big Timiber, Woodbury, Mantura, Clonmell, Nehonsey, Re- 

 paupo, Little Timber (not the Little Timber Creek of Camden 

 County), Raccoon and Oldman's Creek, and the Delaware River 

 some 8,000 acres of marsh. In addition to this there are many acres 

 where extensive breeding undoubtedly occurs, but which are not 

 indicated on the Geological Survey Maps. Throughout this region 

 are patches of woodland containing small swamps and pools. Many 

 of these could probably be neglected, as the woodland species which 

 breed there are not known to migrate far. More serious condi- 

 tions are found in many places behind the 20 miles of dike along the 

 Delaware, and the 30 or 40 miles of dike along the creeks tributary 

 to that river. There must be about 4,000 acres of land behind the 

 dikes along the above creeks and the Delaware River, where the 

 old drainage systems need repairing and extension. This would 

 involve the putting in of a number of new sluices and tidegates, and 

 perhaps also the installation of pumping stations at several places. 

 But these miatters could only be determined by means of careful 

 surveys. 



Along Big Timber Creek, on the Gloucester County side of the 

 County line, there are approximately 400 acres of marsh. For five 

 miles up from the junction of this creek with the Delaware, there 

 is tidal action. Yet it is possible that breeding occurs more or less 

 over about 250 acres of this marsh. For the most part it consists 

 of open tussock swamp with alders around the borders, and wood- 

 land swamps along the smaller tributaries. To eliminate breeding, 

 these swamps would have to be ditched. But the breeding of the 

 non-migrating species in the smaller woodland sections, remote 

 from centers of population, could probably be neglected. The old 

 ditches behind the dikes near the mouth of the creek would have to 

 be watched for the breeding of sylvestris and pipiens, and perhaps 

 some additional drainage would have to be put in here. 



On the southwest of Westville there is an unnamed brook which 

 runs through about 70 acres of marsh. Part of this is woodland and 

 tussock, and is no doubt infested with sylvestris and the less im- 

 portant woodland species. One-third, or one-half, is flushed by the 

 tide, and therefore can be neglected; the remainder would require 

 drainage or oiling. . 



