An account of the trigonometrical survey carried on in the years 1795, and 1796
: by order of the Right Honourable the Marquis Cornwallis, Master General of the Ordnance. By Colonel Edward Williams, and Capt. William Mudge, of the Royal Artillery; and Mr. Isaac Dalby. Communicated by the Duke of Richmond, F.R.S. From the Phliosophical Transactions