Abbe Nicolas Louis De La Caille, Notebook
Nicolas Louis de la Caille
The notebook contains observations made by De la Caille at the Cape and elsewhere; a list of expenses in connection with his observatory at St. Martin (Paris); and details of the mathematical basis for his calculations, including lists of formulae and trigonometrical proofs, used as an aide-memoire during his travels. There are calculations of some star coordinates, apparently made at the Cape, and, most important of all, a calculation of the difference in latitude between the Cape and Klipfontein for his determination of an arc of the meridian.
1746 - 1754
Holograph, 172 pages, bound in 18th century suede, 16.5x21.5cm
http://researcharchives.wits.ac.za/abbe-nicolas-louis-de-la-caille
A892
http://researcharchives.wits.ac.za/historical-papers-research-archive-library-university-of-witwatersrand
Historical Papers Research Archive, University of the Witwatersrand