TY - JOUR T1 - Astronomical Observations Made at Cavan, Near Strabane, in the County of Donegal, Ireland, by Appointment of the Royal Society, by Mr. Charles Mason JF - Philosophical Transactions (1683-1775) VL - 60 SP - 454 EP - 496 PY - 1770/01/01/ UR - http://dx.doi.org/10.1098/rstl.1770.0042 M3 - doi:10.1098/rstl.1770.0042 AU - Mason, C. ER -