The Chalk from Cop-point, near Folkestone, to Walmer in Kent, has been so well described by Mr. W. Phillips, that I need do little more than allude to his paper, in reference to the divisions of the Chalk in East Kent; but in a notice of the Isle of Thanet by the Rev. W. D. Conybeare, this gentleman, from the absence of flints in the Chalk near Margate, was led erroneously to suppose it to belong to the lower division, and it was not till 1865 that this error was exposed in a paper on the Chalk of the Isle of Thanet by Mr. W. Whitaker, F.G.S., of the Geological Survey, the latter gentleman pointed out the true position of the Margate Chalk, as that of the highest Chalk, and superior to that with numerous flints seen at Ramsgate; and he there remarked, “Very likely the Broadstairs Chalk will turn out to be the upper part of the ‘Chalk with many Flints’ (Phillips) of the cliffs from Walmer Castle to Dover Castle, and which is there the highest division; so that the Isle of Thanet section would be the upward continuation of that given by Mr. Phillips.”