.e^cOI ^■^H IKBBl ^ C?"<U»5L>-S3- ^j/^x3^ T" LEntereri nt the Pcist Office (if New Viirk. N Y., as Sei.-<mcl Class Matter. CopjTleht, 1001, by Munn & Co.] A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTitY, AND MANUFACTURES. Vol. L.XXX1V No. 18. I NEW YORK, MAY 4, 1901.… … Assouan Dam—Water Rustling Througli Central Sluices. :«■ -i^ •••^.. WP/k at tbe West Bank, Assiut. Centrifugal Pumps at the Foundation Excavations. Composite Metal and Masonry Construction, Assouan. CONBISUCIION 07 THE GBEAT NILE BESEBVOIB.—[See page 279.] 11901 SCIENTIFIC AMERICAN, INC.
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