The following brief observations have reference to a remarkable discovery that has very recently been made by Sir John Savile Lumley, Her Britannic Majesty's Ambassador at Rome, near the lake of Nemi. The excavations which he has carried on at that spot simultaneously with those at Cività, La Vigna,—about which you have lately had a paper submitted to you,—have apparently resulted in the identification of the site of the Artemisium—the shrine of Diana Aricina.