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SCIENTIFIC AMERICAN SUPPLEMENT NO. 717




NEW YORK, SEPTEMBER 28, 1889.

Scientific American Supplement. Vol. XXVIII., No. 717.

Scientific American established 1845.

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

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TABLE OF CONTENTS.


I. CIVIL ENGINEERING.--The Girard Hydraulic Railway.--One of
the great curiosities of the Paris exposition, the almost