The Roman History · Amm. 24.4.21

While these matters were thus going on in broad daylight, news was brought to the emperor, who was full of watchful care, that the legionary soldiers to whom the digging of the mines had been intrusted, having hollowed out their subterranean paths and supported them with stout stakes, had now reached the bottom of the foundations of the walls, and were ready to issue forth if he thought fit.

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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