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N. J. Mosquito Extermination Association 



the Geological Survey Map. About 200 acres of this land is behind 

 the dikes and similar to the area referred to in the preceding para- 

 graph. The remaining 288 acres is tussock and alder swamp, 140 

 acres is along a tributary which discharges by sluice and tide-gate 

 into the main stream. Inspections for larvae might reveal the need 

 of ditching. The other 140 acres are more or less subject to tidal 

 action, but are along small tributaries in part wooded. They should 

 be inspected for breeding, if it is desired to protect the people of 

 Woodbury. The industries on the river would scarcely be troubled 

 by mosquitoes from here. 



Between Woodbury and Mantua Creeks are two small streams 

 which discharge under the Delaware dike by sluices and tide-gates. 

 With their systems of ditches they drain the land through which 

 they flow, but there are 10 or 20 acres of open tussock swamps here 

 which need inspection and probably further drainage. 



Conditions along Mantua Creek, which also lies opposite Hog 

 Island, are very similar to those just described for Woodbury 

 Creek. As in the case of the latter stream, the land contiguous to 

 this creek for some distance (2^ miles) back from the river ap- 

 pears dry on the Geological Survey Maps. But in fact, there is 

 much stagnant water in old drainage ditches and considerable 

 marsh behind the dike. At the mouth, on the right bank, mud 

 dredged from the Hog Island Channel was being used last spring 

 to fill a low-lying area. On the left bank, there are some cattail 

 swamps adjoining the fertilizer plant there. From here to Berk- 

 ley (2^ miles from the mouth) there must be 600 acres behind 

 the dikes more or less in need of drainage to stop mosquito breed- 

 ing. Just how much ditching and how many new sluices and tide- 

 gates would be necessary to put in could only be determined after 

 a careful inspection of the ditches and swamps for larvae, and the 

 taking of levels. In the neighborhood of Berkley and Mount Royal 

 (3 or 3^ miles from the river) there are some 150 acres of marsh 

 indicated on the map. Part of this is behind the dikes and part 

 is subject to flushing by the tide. There are, then, on Mantua 

 Creek, about 680 acres of marsh or low-lying land which needs 

 careful inspection for breeding and on which, where breeding is 

 found, surveys would have to be made to locate drainage ditches 

 and tide-gates. 



The marsh through which Glonmell Creek flows is about 130 



