J. Playfair and Euclid, Elements of geometry; containing the first six books of Euclid, with two books on the geometry of solids. To which are added, elements of plane and spherical trigonometry, J.B. Lippincott & Co, 1860, p. 291. Available online from Google Libros. See also Cajori's A History of Mathematics.
electricscotland.com
Biographical Dictionary of Eminent Scotsmen (1856), reproduced in Significant Scots
Sophie Forgan, ‘Davy , Jane, Lady Davy (1780–1855)’, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2008 accessed 17 Dec 2014
