See Pomponius, (de Origine Juris Pandect. l. i. tit. ii. leg. 2, No 47,) Heineccius, (ad Institut. l. i. tit. ii. No. 8, l. ii. tit. xxv. in Element et Antiquitat.,) and Gravina, (p. 41 - 45.) Yet the monopoly of Augustus, a harsh measure, would appear with some softening in contemporary evidence; and it was probably veiled by a decree of the senate