An explanation of the magnetic atlas, or variation chart, hereunto annexed; projected on a plan entirely new, by which the magnetic variation on any part of the globe may be precisely determined, for any time, past, present, or future: and the variation and latitude bein accurately known, the longitude is of consequence truly determined. By John Churchman, late land surveyor for the district of the counties of Delaware and Chester, and for part of Lancaster and Berks, Pennsylvania.
- Churchman, John, 1753-1805.
- Date:
- M,DCC,XC. [1790]
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- Online
Online resources
About this work
Publication/Creation
Philadelphia : Printed by James & Johnson, on the north side of Market-Street, between Third and Fourth-Streets, M,DCC,XC. [1790]
Physical description
x, [3], 14-46, 5, [1] p., [3] folded leaves of plates : ill. ; 80.
References note
ESTC W32217
Evans, 22406
Reproduction note
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. (Eighteenth century collections online). Available via the World Wide Web. Access limited by licensing agreements.
Digital image available in the Readex/Newsbank Digital Evans series. Available via the World Wide Web. Access limited by licensing agreements.