crip- 0:005 inch diameter, can be made red hot, water is rapidly de- ed in walls flanked by salient towers. The Romans knew tions of Latin authors and after the representations in bas- composed, etc. of but three varieties of fortress: the castrum, which includ- relief on Trajan’s Column), having… … ROMAN WAR ENGINES. when, under the direction of M. Maitre, Director of the Mu- of zigzag form being cast in each half; so that, when the two than the castella. der to determine their power. The results obtained are of his- are screwed together, a continuous channel is maintained torical importance,…
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