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EBOOK SCIENTIFIC AMERICAN ***


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[Illustration]


SCIENTIFIC AMERICAN SUPPLEMENT NO. 443.


NEW YORK, JUNE 28, 1884.
Scientific American Supplement. Vol. XVII., No. 443.
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.--Beeswax and its Adulterations.
--Chemical ingredients.--Detection of adulterations. 7064
Phenol in the Stem, Leaves, and Cones of Pinus Sylvestris.
--A discovery bearing on the flora of the Carboniferous
epoch and the formation of petroleum. 7065
The School of Physics and Chemistry of Paris.--With
engraving of laboratory. 7065
Some Relations of Heat to Voltaic and Thermo Electric
Action of Metals in Electrolysis.
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