74
74
Fleurieu, Charles Pierre Claret, Comte de
VOYAGE FAIT POUR ORDRE DU ROI EN 1768 ET 1769, A DIFFERENTES PARTIES DU MONDE, POUR EPROUVER EN MER LES HORLOGES MARINES INVENTEES PAR M. FERDINAND BERTHOUD. PARIS: IMPRIMERIE ROYALE, 1773
Estimate
2,0003,000
LOT SOLD. 2,250 GBP
JUMP TO LOT
74
Fleurieu, Charles Pierre Claret, Comte de
VOYAGE FAIT POUR ORDRE DU ROI EN 1768 ET 1769, A DIFFERENTES PARTIES DU MONDE, POUR EPROUVER EN MER LES HORLOGES MARINES INVENTEES PAR M. FERDINAND BERTHOUD. PARIS: IMPRIMERIE ROYALE, 1773
Estimate
2,0003,000
LOT SOLD. 2,250 GBP
JUMP TO LOT

Details & Cataloguing

Travel, Atlases, Maps and Natural History

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Fleurieu, Charles Pierre Claret, Comte de
VOYAGE FAIT POUR ORDRE DU ROI EN 1768 ET 1769, A DIFFERENTES PARTIES DU MONDE, POUR EPROUVER EN MER LES HORLOGES MARINES INVENTEES PAR M. FERDINAND BERTHOUD. PARIS: IMPRIMERIE ROYALE, 1773
FIRST EDITION, 2 volumes, 4to (257 x 192mm.), 5 engraved folding maps, one engraved plate, 5 folding tables, contemporary mottled calf, spines gilt, red edges, minor staining, slight wear to binding
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Provenance

Jose Jorge Ribeiro, bookplate; with manuscript letters and notes in Spanish and Portuguese, one addressed to Senor Jose Jorge; Mo. Deguibers?, signature to each title

Literature

Sabin 24750

Catalogue Note

FINE COPY OF A RARE WORK about the longitude race. Ferdinand Berthoud, Pierre Le Roy and John Harrison were all competing to obtain the best marine chronometer. Fleurieu was an essential part of the sea campaign to test Berthoud's first marine chronometer. This was the French attempt to overtake Britain in the race to find the best way to calculate longitude. Fleurieu and Berthoud set out on a testing expedition from 1768 to 1769 on the frigate Isis under Fleurieu's command. The chronometers almost invariably indicated the hour as accurately after the ship had left port, as if they were still on land. Knowing the actual local time at each present location by astronomy, they could easily determine the ship's exact position and longitude on a chart. Using Berthoud's chronometer Fleurieu was able for the first time to calculate accurate positions of the ports they visited. The results of their observations was published in this work.

Travel, Atlases, Maps and Natural History

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