Publisher's Synopsis
Excerpt from The Topography and Geology of the Peninsula of Sinai: Western Portion
The area about to be described was surveyed during the five and a half months extending from the middle of October, 1898, to the end Of March, 1899, by myself and by Mr S. T. Hardwick, who took charge of the topographical part of the work. The work was done by traverse up the various wadis crossing the plains, and by ascending commanding hills from which other points could be fixed and the country sketched in. The instruments employed were a measuring wheel, plane-table, and occasionally a tacheometer, while Observations were taken every night, if possible, for latitude by altitudes of Polaris. The greater part Of the country was done On sheets enlarged from the published maps Of the Ordnance Survey of Sinai, on which the outlines of the main wadis were traced and the triangulation points used by the Ordnance Survey Officers were transferred. The lower part Of the Peninsula was surveyed on blank sheets. In the southern part of the district, work was very difficult on account of the boulder-strewn nature of the wadis, which prevented the use of camels in going up nearer the hills, and of the impossibility Of crossing out Of one wadi into another, thus entailing a loss of time in descending one valley to reach the next. In the middle of winter, too, the weather was Often a hindrance on account of rain and snowstorms, the points often being hidden by clouds. In the spring on the coast-plain sandstorms and winds were of frequent occurrence, the former Often causing the stoppage of work for a day, while the wind was Often too strong to allow of the plane-table being set up on a hill-top, the compass being so affected that it would not settle. NO trouble was experienced from magnetic rocks, as it was always possible to set the plane-table from the triangula tion points._12.
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