A Collection of Notes on Geographical Surveying. R. S. Webb. Aug 1921. This comprises 211 pages numbered by Webb of detailed technical writing on such subjects as Spherical Excess, The Marine Chronometer, Mathematical Interpolation, The Zenith Telescope, Elimination of Error, etc. Compiled during the period after World War I, when he was concerned with Geodesy, mapping South Africa, the Orange Free State and Basutoland.