TY - JOUR T1 - A Letter of Dr John Wallis, D. D. Professor of Geometry in the University of Oxford, and Fellow of the Royal Society in London; To Dr Hans Sloane, Secretary to the Said Royal Society; Relating to That Isthmus, or Neck of Land, Which is Supposed to Have Joyned England and France in former Times, Where Now is the Passage Between Dover and Calais JF - Philosophical Transactions (1683-1775) VL - 22 SP - 967 EP - 979 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1700.0103 M3 - doi:10.1098/rstl.1700.0103 AU - Wallis, J. ER -