with astonishment, that comprehensive genius, which, in the infancy of science, could surmount such difficulties, and compute a system, that experienced but a trifling derangement in the course of sixteen centuries. Although Cæsar wrote with his own hand only seven books of the Gallic campaigns, and the history of the civil wars till the death of his great rival, it seems highly probable, that he revised the last or eighth book of the Gallic war, and communicated information for the history of the Alexandrian and African expeditions, which are now usually published along with his own Commentaries, and may be considered as their supplement, or continuation. The author of these works, which nearly complete the interesting story of the campaigns of Cæsar, was Aulus Hirtius, one of his most zealous followers, and most confidential friends. He had been nominated Consul for the year following the death of his master; and, after that event, having espoused the cause of freedom, he was slain in the attack made by the forces of the republic on Antony’s camp, near Modena. The eighth book of the Gallic war contains the account of the renewal of the contest by the states of Gaul, after the surrender of Alesia, and of the different battles which ensued, at most of which Hirtius was personally present, till the final pacification, when Cæsar, learning the designs which were forming against him at Rome, set out for Italy. Cæsar, in the conclusion of the third book of the Civil War, mentions the commencement of the Alexandrian war. Hirtius was not personally present at the succeeding events of this Egyptian contest, in which Cæsar was involved with the generals of Ptolemy, nor during his rapid campaigns in Pontus against Pharnaces, and against the remains of the Pompeian party in Africa, where they had assembled under Scipio, and being supported by Juba, still presented a formidable appearance. He collected, however, the leading events from the conversation of Cæsar(217), and the officers who were engaged in these campaigns. He has obviously imitated the style of his master; and the resemblance which he has happily attained, has given an appearance of unity and consistence to the whole series of these well-written and authentic memoirs. It appears that Hirtius carried down the history even to the death of Cæsar, for in his preface addressed to Balbus, he says, that he had brought down what was left imperfect from the transactions at Alexandria, to the end, not of the civil dissensions, to a termination of which there was no prospect, but of the life of Cæsar(218).