Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 3, 2025
In fact, one of the most pressing of the problems the Sumerian and early Babylonian engineers had to solve was the keeping of the canals free from silt. What the floods, if left unchecked, may do in Mesopotamia, is well illustrated by the decay of the ancient canal-system, which has been the immediate cause of the country's present state of sordid desolation.
Water only flows downhill, and there is no such thing as downhill on a surface already in fluid equilibrium. A few canals might presumably be so situated that their flow could, by inequality of terrane, lie equatorward, but not all....Now it is not in particular but by general consent that the canal-system of Mars develops from pole to equator.
As examples, he never even discusses the totally inadequate water-supply for such worldwide irrigation, or the extreme irrationality of constructing so vast a canal-system the waste from which, by evaporation, when exposed to such desert conditions as he himself describes, would use up ten times the probable supply. But he never considers the difficulties this implies.
Word Of The Day
Others Looking