An Easy Method of Deducing the Time of the Sun's Passing the Meridian per Clock, without the Help of the Equation Tables, by Equal Altitudes Taken on Two Succeeding Days. By David Rittenhouse, A. M. Communicated by William Smith, D. D. Provost Coll. Philad
Published in Transactions of the American Philosophical Society, in 1769, in volume 1, pages 47-49
Date published:1769