Benard Direx.
[Paris, c.1780.]
Engraving, 18th century watermark. 280 x 400mm (11 x 15¾"). Binding folds, slight ink offset, stains.
An illustration of the portable observatory used by astronomers William Wales and William Bayly on James Cook's Second Voyage (1772-5), on which their objective was to test how effective Larcum Kendall's K1 chronometer was in measuring longitude at sea. This observatory would have been erected to compare results. Engraved by Jacques-François Benard for a French edition of Wales & Bayley's rare 'The Original Astronomical Observations, made in the course of a Voyage towards the South Pole, and Round the World, in His Majesty's Ships the Resolution and Adventure'.
[Ref: 61059] £130.00
[Paris, c.1780.]
Engraving, 18th century watermark. 280 x 400mm (11 x 15¾"). Binding folds, slight ink offset, stains.
An illustration of the portable observatory used by astronomers William Wales and William Bayly on James Cook's Second Voyage (1772-5), on which their objective was to test how effective Larcum Kendall's K1 chronometer was in measuring longitude at sea. This observatory would have been erected to compare results. Engraved by Jacques-François Benard for a French edition of Wales & Bayley's rare 'The Original Astronomical Observations, made in the course of a Voyage towards the South Pole, and Round the World, in His Majesty's Ships the Resolution and Adventure'.
[Ref: 61059] £130.00