Astronomy explained upon Sir Isaac Newton's Principlesand made easy to those who have not studied mathematics : to which are added, a plain method of finding the distances of all the planets from the sun ... : an account of Mr. Horrox's observation of the transit of Venus in the year 1639: and, of the distances of all the planets from the sun, as deduced from observations of the transit in the year 1761The seventh edition.
Printed for W. Strahan [and 12 others1785-01-01
