TY - JOUR T1 - A Letter from Mr. Henry Baker, F. R. S. to the President, Containing an Extract of a Letter from Mr. William Arderon, F. R. S. to Mr. Baker, Giving an Accont of the Present Condition of the Roman Camp at Castor in Norfolk, with a Plan of It; And Also a Representation of an Halo or Mock-Sun Observed by the Same Gentleman July 11, 1749 JF - Philosophical Transactions (1683-1775) VL - 46 SP - 196 EP - 203 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1749.0037 M3 - doi:10.1098/rstl.1749.0037 AU - Baker, H. AU - Arderon, W. ER -