Mathematical principles, containing the elements of geometry, so digested as to render both the practical and theoretical parts familiar and easy to youth; And, To convey so much of the Science in general, as may be necessary to those of riper Years, who may be restricted in point of Time. The whole selected from Euclid, and the most eminent authors, and particularly calculated to be extremely useful in Schools. By Sisson Putland Darling, Principal of the Mercantile, Nautical and Military Academy, in Mabbot-Street, Dublin [electronic resource].