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Radcliffe Tracts 13 (1)Anonymous [Heath, Thomas]
The Description and Use of a New Astronomical Instrument, For taking Altitudes of the Sun and Stars at Sea, without an Horizon; together with An Easy and Sure Method of Observing The Eclipses of Jupiter's Satellites, Or any Phaenomenon of the like Kind, on Ship-board; in order to determine the Difference of Meridians at Sea. To which are added, Tables for computing the Times when the Eclipses of the First Satellite of Jupiter happen under the Meridian of London
London: Printed for G. Strahan, etc., 1735.
[1934-41]
1735