STEEL IRRIGATION CANAL.
In Egypt, where a vast amount of dry and parched land, which has received no water during 3,000 or 4,000 years, is to be irrigated by water from the Nile, which is discharged into the canal by a special plant. These, consisting of a set of powerful pumps, lift the water through suction and discharge it into riveted steel raising-mains of the same diameter, which, in their turn, pour the water into a service reservoir. A large steel canal starts from this service-reservoir and turns the stream into distributing earth canals or culverts, from which it flows upon the land. The lift of the pumps is from 50 to 67 ft., and the top of the reservoir wall is over 500 ft. above sea-level. The service-reservoir is of reinforced concrete. The canal is of riveted steel, the plates being 3-in. in thickness, and is nearly semi-circular in form, and has a diameter of 19 ft. 8 ins., with 2-ft. straight sides at the top, being, therefore, nearly 12 ft. deep. Its total length is over a mile. It is built up of seven plates round the circumference, the plates being connected together by 1-in. snaphead rivets, of which 650.000 were used.
Concordia, Mo., proposes to vote on issuing bonds for the installation of an additional pumping station.
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