The Roman History · Amm. 20.4.19

After this Julian felt more anxiety than ever; and, keenly alive to the future consequences, neither wore his diadem or appeared in public, nor would he even transact the serious business which pressed upon his attention, but sought retirement, being full of consternation at the strangeness of the recent events. This continued till one of the decurions of the palace (which is an office of dignity) came in great haste to the standards of the Petulantes and of the Celtic legion, and in a violent manner exclaimed that it was a monstrous thing that he who had the day before been by their will declared emperor should have been privily assassinated.

Ammianus Marcellinus · translated by C. D. Yonge · 1911 reprint
C. D. Yonge translation (preface dated February 1862); G. Bell and Sons, 1911; Project Gutenberg #28587
Passage preview. Read in context for the complete text, notes and references.