Ancient and modern engineering and the Isthmian canal (1903)
Burr, William H. (William Hubert), 1851-1934 · New York, J. Wiley & Sons; [etc., etc.] · leaf 35
ituted rock tunnels with complicated ramifications which must have added much to the difficulty of the work and required the exercise of engineering skill and resources of a high order. 8. Nile Irrigation. — The value of the waters of the Nile for irrigation and fertilization were fully appreciated… … periods of great depression throughout the whole Nile valley consequent upon the phenomenal failure of overflow to the nor- mal extent. One of the earliest monarchs who was actuated by a fine public spirit undertook to solve the problem of providing against such depressions by diverting a portion…
Civil engineering · Canals, Interoceanic
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