Title: Observations on I. The answer of M. L'Abbe de Vertot to the late Earl Stanhope's inquiry concerning the Senate of ancient Rome, dated December 1719. II. A dissertation upon the constitution of the Roman Senate by a gentleman, published in 1743. III. A treatise on the Roman Senate by Dr Conyers Middleton, published in 1747. IV. An essay on the Roman Senate by Dr. Thomas Chapman. published in 1750