The Roman History · Amm. 17.7.2

On the 23rd of August, at daybreak, some heavy black clouds suddenly obscured the sky, which just before was quite fair. And the sun was so wholly concealed that it was impossible to see what was near or even quite close, so completely did a thick lurid darkness settle on the ground, preventing the least use of the eyes.

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.