A most curious and exact calculation and description of the triple conjunction, of the three superious planets, Saturn, Jupiter, and Mars, in December 1722. Shewing how and when they pass by each other; as also the Transit of Mercury over the Sun's Disk, in October next. Done by Charles Leadbetter, Author of The Treatise of Eclipses, and Teacher of the Mathematicks, at the Hand and Pen, in Cock-Lane, near Shore-Ditch, London. A Work very useful for all Gentlemen, Students in Astronomy, and others: To whom this Sheet is humbly Presented by the Author.

Date:

[1722]