Surveying improved: or, the whole art, both in theory and practice, fully demonstrated. In four parts. ... The sixth edition, with additions, illustrated with cuts, &c. and also accurately revised, improved, and augmented. By Henry Wilson, ... 
Wilson, Henry,1673-1741.
London : printed for J. and F. Rivington, L. Hawes and Co. W. Johnston, T. Longman, S. Crowder, B. Law, and Robinson and Roberts,
1769.
The additions by Hume have separate titlepages; register and pagination are continuous.
ESTC