A Memoir of the Construction Cost And Capacity of the Croton Aqueduct Compil
A Memoir of the Construction Cost And Capacity of the Croton Aqueduct Compil
King, Charles, 1844-1933
The book A Memoir of the Construction Cost And Capacity of the Croton Aqueduct Compil was written by author King, Charles, 1844-1933 Here you can read free online of A Memoir of the Construction Cost And Capacity of the Croton Aqueduct Compil book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Memoir of the Construction Cost And Capacity of the Croton Aqueduct Compil a good or bad book?
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The water of the spring in question would necessarily rise to the surface, because, in the well at Elbeuf, which is nearly nine yards above the level of the sea, the water rises from twenty-seven to twenty-nine yards above the surface of the earth, and consequently from thirty-six to thirty-eight yards above the level of the ocean. Now, as the orifice at Gre- nelle is only thirty-four yards above this same level, it follows that if the same spring were met with, the water must rise above the su...rface of thev earth at Crenelle. " The necessary works were now commenced with boring-rods about nine yards long, attached to each other, and which could be raised or lowered by mechanical means ; and an ingenious method was adapted for giving them a circular motion. The diameter of the bore hole was about six inches. The instrument attached to the end of the lowest boring-rod, was changed according to the different strata which were successively reach- ed, the form adapted for passing through the softer materials of the surface, being unsuit- able to boring through the chalk and flint, a hollow tube being used for the former, while the latter was penetrated by a chisel-shaped instrument.
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