Very little is known about the life and career of Aemilius Macer, a jurist active in the Severian age. The full name is not even known: in the Index Florentinus there is only Macer, while the nomen Aemilius appears certified in three inscriptions in the Digesta Iustiniani. On the other hand, judging from the subjects dealt with in his works, a significant experience, at a high level, in the imperial administration emerges: it is, in fact, a production that appears to be strongly focused on territorial management in all its articulations. This volume collects: the De Officio Praesidis, dedicated to the provincial governor, which is an instruction manual for "the good governor", probably in analogy with the previous - but much wider and more complex - work of Ulpianus on the office of the proconsul; the Ad Legem Vicensimam Hereditatium, the only work to us known to comment on the law on the 5% tax on inheritance and legacies; the De Re Miltari, dedicated to military experience; and the de Appellationibus, dedicated to the analysis of some peculiar aspects of the institute of appeal, probably those that had become established in practice, especially in the light of the now consolidated orientation of the imperial chancellery, and the examination of which could be useful to the legal operators of the time.
