Observations on I. The answer of M. l'abbé 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 / By Mr. Hooke