Proposed water supply and sewerage for Jerusalem : with description of its present state and former resources / by John Irwine Whitty.

  • Whitty, John Irwine, 1822-?
Date:
1863
Catalogue details

Licence: Public Domain Mark

Credit: Proposed water supply and sewerage for Jerusalem : with description of its present state and former resources / by John Irwine Whitty. Source: Wellcome Collection.

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    183 of one mile and three-quarters. He also reports that an abundance of water is stored up in the new red sand-stone, which may be obtained by sinking shafts and driving tunnels; that the sand-stone is generally very porous, admitting of deep wells drawing their supply from distances exceeding one mile. Though the rocks in Judea are of a different formation, yet, being soft and cavernous, they are, I believe, capable of retaining about the same amount of water as the new red sand-stone ; and a comparison instituted between them may be taken as at least an approximate guide in estimating the 11 power —that is, the length of draft—of wells in the neighbourhood of J erusalem. The following diagram will illustrate the principle under which the most efficient of such wells are SECTION ILLUSTRATIVE OF THE PRINCIPLE OF ORDINARY DEEP WELLS. brought into action. The generality of them merely enter strata through which water passes in its transit M 2