TY - JOUR T1 - An Account of the Great Alterations Which the Islands of Sylley Have Undergone since the Time of the Antients, Who Mention Them, as to Their Number, Extent, and Position: In a Letter to the Rev. Thomas Birch, D.D. Secr. R. S. by the Rev. Mr. Wm Borlase, M. A. F. R. S. JF - Philosophical Transactions (1683-1775) VL - 48 SP - 55 EP - 69 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1753.0008 M3 - doi:10.1098/rstl.1753.0008 AU - Borlase, W. ER -