TY - JOUR T1 - Two Letters, Written by Dr. John Wallis to the Publisher; One, Concerning the Variety of the Annual High-Tides In Respect to Several Places: The Other, Concerning Some Mistakes of a Book Entitaled SPECIMINA MATHEMATICA Francisci Dulaurens, Especially Touching a Certain Probleme, Affirm'd to Have Been Proposed by Dr. Wallis to the Mathematicians of All Europe, for a Solution JF - Philosophical Transactions (1665-1678) VL - 3 SP - 652 EP - 955 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1668.0011 M3 - doi:10.1098/rstl.1668.0011 AU - Wallis, J. ER -