I here send you Drawings (Pl. XV. XVI.) of some broken Lids of Stone Coffins, which were discovered in Cambridge Castle, when great part of it was destroyed, in the beginning of the year 1810.

This castle, we are told, was built by William the Conqueror; and as they were found under part of the original ramparts, it should seem that they must be, at least, as ancient as his time. However I do not mean to offer any conjectures concerning their antiquity, but shall be obliged to you to lay the Drawings of them before the Society, if you think them worthy of their notice.