Compasse
Mackay, Ae The theory and practice of finding the longitude at
sea or land: added, methods of determining the lat tude of a place, and variation of the compass. Wit tables. Aberdeen, 1801. 2 v. Pls. 8°.
Samee 3d ede Lond, 1809. 2 ve Pls. 826
*#E 2186.6