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SCIENTIFIC AMERICAN SUPPLEMENT NO. 530




NEW YORK, FEBRUARY 27, 1886

Scientific American Supplement. Vol. XXI, No. 530.

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 ETC.--Decomposition and Fermentation of Milk.


II. ENGINEERING AND MECHANICS.--The Ethics of Engineering
Practice.--An address by Mr. JAS. C. BAYLES, before the American