Of the book on Military Discipline, a good deal has been incorporated into the work of Vegetius; and Cicero’s orations may console us for the want of those of Cato. But the loss of the seven books, _De Originibus_, which he commenced in his vigorous old age, and finished just before his death, must ever be deeply deplored by the historian and antiquary. Cato is said to have begun to inquire into the history, antiquities, and language of the Roman people, with a view to counteract the influence of the Greek taste, introduced by the Scipios; and in order to take from the Greeks the honour of having colonized Italy, he attempted to discover on the Latin soil the traces of ancient national manners, and an indigenous civilization. The first book of the valuable work _De Originibus_, as we are informed by Cornelius Nepos, in his short life of Cato, contained the exploits of the kings of Rome. Cato was the first author who attempted to fix the era of the foundation of Rome, which he calculated in his _Origines_, and determined it to have been in the first year of the 7th Olympiad. In order to discover this epoch, he had recourse to the memoirs of the Censors, in which it was noted, that the taking of Rome by the Gauls, was 119 years after the expulsion of the kings. By adding this period to the aggregate duration of the reigns of the kings, he found that the amount answered to the first of the 7th Olympiad. This is the computation followed by Dionysius of Halicarnassus, in his great work on Roman antiquities. It is probably as near the truth as we can hope to arrive; but even in the time of Cato, the calculated duration of the reigns of the kings was not founded on any ancient monuments then extant, or on the testimony of any credible historian. The second and third books treated of the origin of the different states of Italy, whence the whole work has received the name of _Origines_. The fourth and fifth books comprehended the history of the first and second Punic wars; and in the two remaining books, the author discussed the other campaigns of the Romans till the time of Ser. Galba, who overthrew the Lusitanians.