Mr King, in his many ingenious and pertinent Observations on Ancient Castles, (published in the Archaeologia, vol. VI. art. XXVII.) for the purpose of explaining the conclusions he has drawn from them, has given a full description of Rochester castle, which he remarks was in great part re-edified, if not originally built by Gundulph bishop of that see, about 1088. The justice of this prelate's claim to have been the architect of this venerable fabric is examined in the following disquisition ; and, should the paper appear to you to be not unworthy of the attention of the society of which you are a member, by communicating it to that learned and respectable body, you will oblige