The Roman History · Amm. 19.4.8

We were attacked by this deadly pestilence from the excessive heat, which our numbers aggravated, though but few died: and at last, on the night after the tenth day from the first attack, the heavy and dense air was softened by a little rain, and the health of the garrison was restored and preserved.

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
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