. Bulletin. Agriculture; Agriculture. The Mosquitoes of New Jersey 75 During the summer of 1915 the grass in the sods grew vigorously and transformed the dike into a wall of green. The sods used in capping the dike dried out and separated until they looked like the battlements on a wall, and the layer became useless as a means of keeping water out. The mud cap settled down and formed a con- tinuous solid cap serving much better the purpose for which it was intended than did the sod layer. Some dikes have been constructed entirely with mud but always in places where sod was not available. In su
. Bulletin. Agriculture; Agriculture. The Mosquitoes of New Jersey 75 During the summer of 1915 the grass in the sods grew vigorously and transformed the dike into a wall of green. The sods used in capping the dike dried out and separated until they looked like the battlements on a wall, and the layer became useless as a means of keeping water out. The mud cap settled down and formed a con- tinuous solid cap serving much better the purpose for which it was intended than did the sod layer. Some dikes have been constructed entirely with mud but always in places where sod was not available. In such instances the mud has been scooped from a trench back of the dike (forming a ditch. Fig. 42. Tide-gate completed. (Courtesy of the Union County Mosquito Extermination Commission). paralleling the work and giving useful drainage), and piled up un- til a dike of requisite height with due allowance for shrinkage had been built, which was 2 feet wide at the top and as broad at the base as was demanded by the normal angle of repose. This type of dike does not withstand the weather or the water as well as the sod type but is efficient if carefully looked after. At points where streams or larger ditches cross the dikes sluice- boxes and tide-gates were introduced. The largest sluice-box used measured inside 3 feet high, 6 feet wide and 24 feet long. It was made of 2-inch lumber nailed to outside ribs at a distance of 18 inches apart. The box was set on 2 rows of 2-inch sheet piling and then covered with soil. A large heavy wooden door was sus- pended over the down-stream end of the box to serve as a tide- gate. The following specifications have been used in the construe-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New Jersey Agricultural Experiment Station. [New Brunswick, N. J. ] : The Station
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear
