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Astronomy.

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Astronomical instruments. --- Astronomy, Arab.

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W. H. B. Webster (1793-1875) studied medicine and surgery in London, and in 1815 signed up to serve in the Royal Navy as an assistant surgeon. Because it was peacetime, however, he did not secure a position until 1828, when he was posted as ship's surgeon on the South Atlantic scientific mission of HMS Chanticleer under Captain Henry Foster (1796-1831), a Fellow of the Royal Society with extensive experience of surveying expeditions. Published in 1834, this is Webster's two-volume account of the Chanticleer voyage, the objectives of which included work on longitudes, and carrying out gravity pendulum experiments at various latitudes to attempt more accurate calculation of the shape of the earth. Volume 2 describes Central America and Panama, where, after successfully completing longitude measurements using rockets, Captain Foster tragically drowned. The second half of the volume summarises the scientific observations made during the voyage, and contains the cumulative index.

Voyages and travels. --- Longitude --- Hydrography --- Chanticleer (Sloop) --- Aquatic sciences --- Navigation --- Hydrology --- Degrees of longitude --- Distances --- Geodetic astronomy --- Geographical positions --- Meridians (Geodesy) --- Journeys --- Travel books --- Travels --- Trips --- Voyages and travels --- Geography --- Adventure and adventurers --- Travel --- Travelers