London, John and Paul Knapton, 1750. Small 8vo. Contemp. full calf. Spine worn and frontcover detached. Corners of binding worn. (12),420 pp., textdiagrams and textfigs. (12),420 pp. Browning to titlepage and repairs to verso of. A bit of inner lower corner of titlepage gone, loosing 3 letters in "Printed for" Some brownspots to outer margins. Some traces of use. Internally generally clean and printed on good paper.
The first edition was published 1707 and it was regularly printed throughout the eighteenth century. All issues are scarce. Dougharty (1677-1755) was an Irisman who ran a writing and arithmetic school in Worchester (Macclesfield No 657 (1707)).