TY - JOUR T1 - An Explication of an Obscure Passage in Albert Girard's Commentary upon Simon Stevin's Works (Vide Les Oeuvres Mathem. de Simon Stevin, a Leyde, 1634, p. 169, 170); By Mr. Simson, Professor of Mathematics at the University of Glasgow: Communicated by the Right Honourable Philip Earl Stanhope JF - Philosophical Transactions (1683-1775) VL - 48 SP - 368 EP - 377 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1753.0056 M3 - doi:10.1098/rstl.1753.0056 AU - Simson, M. AU - Philip, H. ER -