Mackay, Andrew.
The theory and practice of finding the longitude at sea or land: added, methods of determining the latitude of a place, and variation of the compass; With tables. 2d ed., improved and enlarged. In 2 v. Aberdeen, pr. for the author. 1801. 2v. Plates. 8°.
**E2188.1 Same. In 2 v. 3d ed. Lond.spr. for the author. 1809. 2v. Plates 8°, *¥E.186.6
“Tables, Astronomical -Latitude -Compass. -Longitude