The theory of Centrifugal forces, continued; and aplyed to the Cases of the planets; and from this Centrifugal force, Mr. Winthrop confuted the hypothesis of vortices, from this also arises the spheroidal form of the earth.
“April 10, 1754.,” Founders Online, National Archives, last modified March 30, 2017, http://founders.archives.gov/documents/Adams/02-01-02-0009-0001-0007. [Original source: The Adams Papers, Earliest Diary and Autobiography of John Adams, June 1753 – April 1754, September 1758 – January 1759, ed. L. H. Butterfield. Cambridge, MA: Harvard University Press, 1966, p. 63.]