Account of the Transit of Mercury, Observed at Norriton, in Pennsylvania, Nov. 9. 1769 Agreeable to an Appointment of the American Philosophical Society, Held at Philadelphia, for Promoting Useful Knowledge. By William Smith, D. D. Provost of the College of Philadelphia; John Lukens Esq; Surveyor General of Pennsylvania; David Rittenhouse, M. A. and Mr. Owen Biddle. Communicated by Benjamin Franklin, LL. D. F. R. S. and President of the Philosophical Society at Philadelphia