TY - JOUR T1 - Observations of the Immersions and Emersions of the Satellites of Jupiter, Taken in the Year 1768, by Ensign George Sproule, of His Majesty's 59th Regiment, on the South Point of the Entrance of Gaspee Bason, Which Bears from Cape Ferrilong, or the Cape Forming the Bay to the Northward, N. 68$\frac{1}{4}$ W. by the True Meridian, Distant 12$\frac{1}{4}$ Marine Miles. Communicated by the Astronomer Royal JF - Philosophical Transactions (1683-1775) VL - 64 SP - 177 EP - 181 PY - 1774/01/01/ UR - http://dx.doi.org/10.1098/rstl.1774.0022 M3 - doi:10.1098/rstl.1774.0022 AU - Sproule, G. AU - Royal, A. ER -