In the course of last season I informed the Society of Antiquaries that it was my intention to make, on the part of the Caerleon Archaeological Association, an examination of some of the remains of the ancient Roman buildings at Caerwent; and I promised to lay before them the result. In redemption of that promise, I have now the pleasure to communicate to the Society the particulars of the excavations which were made in the course of last summer, under the direction and superintendence of our excellent and able Secretary, J. Y. Akerman, Esq.; and I gladly take this opportunity of publicly tendering to him, on the part of the members of the Caerleon Association, and myself, our thanks for the very careful attention and unremitting assiduity with which he directed the operations. I must also tender my acknowledgments to Thomas Wakeman, Esq. who has made deep researches and large collections relative to the history of Monmouthshire; and who, at the Annual Meeting of the Caerleon Archaeological Association, in August last, read a paper on the history of Caerwent, of which he has kindly allowed me to embody a large portion in this communication.