The Roman History · Amm. 23.1.3

But though Alypius applied himself vigorously to the work, and though the governor of the province co-operated with him, fearful balls of fire burst forth with continual eruptions close to the foundations, burning several of the workmen and making the spot altogether inaccessible. And thus the very elements, as if by some fate, repelling the attempt, it was laid aside.

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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