A weekly paper, uniform in size with the SCIENTIFIC AMERICAN, but a
distinct publication. It contains working drawings of engineering
works, and elaborate treatises on every branch of Science and
Mechanics, by eminent writers, at home and abroad. An illustrated
cover protects the handsomely printed sheets. Price, $5.00 per annum.
Single copies 10 cents.
_One copy of the_ SCIENTIFIC AMERICAN _and one copy of the_ SCIENTIFIC
AMERICAN SUPPLEMENT will be sent for one year, postage prepaid, to any
subscriber in the United States or Canada, on receipt of _seven
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