Scientific American
Reading edition
![[Illustration: Scientific American]](/illustrations/ad8fe5a374a2e850.png)
A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES.
Vol. XXXIX.—No. 6 NEW YORK, AUGUST 10, 1878 $3.20 per Annum.
[NEW SERIES.] [POSTAGE PREPAID.]
Reading edition
A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES.
Vol. XXXIX.—No. 6 NEW YORK, AUGUST 10, 1878 $3.20 per Annum.
[NEW SERIES.] [POSTAGE PREPAID.]