The Roman History · Amm. 22.8.48

Now the portions of the Black Sea which are exposed to the north wind are so thoroughly frozen that, while the rivers, as it is believed, cannot continue their course beneath the ice, yet neither can the foot of beast or man proceed firmly over the treacherous and shifting ground; a fault which is never found in a pure sea, but only in one of which the waters are mingled with those of rivers. We have digressed more than we had intended, so now let us turn back to what remains to be told.

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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