- 100
Churchman, John
Estimate
2,000 - 3,000 GBP
bidding is closed
Description
- Churchman, John
- The Magnetic Atlas, or variation charts of the whole terraqueous globe... by which the observations being truly made, the longitude may be ascertained. The fourth edition with considerable additions. London: Printed by C. and R. Baldwin, 1804
- paper
4to (292 x 220mm.), 3 folding engraved charts, original boards, uncut, modern blue morocco-backed cloth box, spine gilt, some spotting and offsetting, binding rubbed, lower cover stained, rebacked
Condition
the condition of this lot is as described in the catalogue description
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."
Catalogue Note
A scarce and unusual work by an early self-taught American scientist: an interesting footnote to the eighteenth century history of navigation in general and the search for a method of measuring longitude in particular. The text presents a rich history of navigational accounts and scientific speculation on the subject of magnetic variation and offers methods for determining longitude based on the revolution of magnetic points around the Earth's north and south poles