Biographical Sketch of the Literary Career of the Late Colonel Colin Mackenzie, Surveyor-General of India; Comprising Some Particulars of His Collections of Manuscripts, Plants, Coins, Drawings, Sculptures, &c. Illustrative of the Antiquities, History, Geography, Laws, Institutions, and Manners, of the Ancient Hindús; Contained in a Letter Address by Him to the Right Hon. Sir Alexander Johnston, V.P.R.A.S. & C. & C