23.) The spot is still visible in Nardini (l iv.c.2, p.

159, 160,) and Nolli's great plan of Rome.] [Footnote 86: For the Roman trumpet, and its various notes, consult Lipsius de Militia Romana, (Opp.tom.iii.l.iv.

Dialog.x.

p.
125-129.) A mode of distinguishing the charge by the horse-trumpet of solid brass, and the retreat by the foot-trumpet of leather and light wood, was recommended by Procopius, and adopted by Belisarius.].