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SCIENTIFIC AMERICAN SUPPLEMENT NO. 455





NEW YORK, SEPTEMBER 20, 1884

Scientific American Supplement. Vol. XVIII, No. 455.

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. CHEMISTRY AND METALLURGY.--Gallisin, an Unfermentable