A plain method of determining the parallax of Venus, by her transit over the sun: and from thence, by analogy, the parallex and distance of the sun, and of all the rest of the planets. By James Ferguson.

London : printed for, and sold by the author, in Red-Lion-Court, opposite Serjeant's Inn, Fleet-Street; and also by Mr. Millar, Bookseller in the Strand; Mr. Nairne, optician near the Royal-Exchange; and Mr. Watkins, optician, 1761.

[2],54.,plates ; 40.

ESTC T18584