Description | ' Translation of Part of a Letter from Monsieur de L'Isle (de la Croyere) to Doctor Bevis, giving Notice of his intended Journey to the Mouth of the River Oby; in order to observe Mercury's Transit over the Sun on April 21 to May 2 2740 : and desiring the English Astronomers to observe the Moon's Passage over the Meridien etc, for a month before and after, for reducing his Observation to the Meridien of England. '
Read to the Royal Socity on 13 March 1739/1740 |