Table of contents
June 20, 1868, Volume 18 No 25 pp385-398
About the coverPatent Notes
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Top of pageArticles
Improved Machine for Drilling Stone - pp385 - 386
doi:10.1038/scientificamerican06201868-385
Possibility of Speech by those Hitherto Considered Mutes - p389
doi:10.1038/scientificamerican06201868-389
The United States Assay Office in New York - p390
doi:10.1038/scientificamerican06201868-390
Barometers as Indicators of the Weather - p390
doi:10.1038/scientificamerican06201868-390a
Manufacturing Mining and Railroad Items - p390
doi:10.1038/scientificamerican06201868-390b
Recent American and foreign Patents - pp390 - 391
doi:10.1038/scientificamerican06201868-390c
The “Oscillating or Variable Eccentric Motion” - p392
doi:10.1038/scientificamerican06201868-392b
Why a Long Screwdriver Impels a Screw More Easily than a Short One - p393
doi:10.1038/scientificamerican06201868-393a
Grindstones—their Actual and Possible Uses - p393
doi:10.1038/scientificamerican06201868-393b
To Advertising Correspondents —Axes to Grind - p393
doi:10.1038/scientificamerican06201868-393c
Official Report of Patents and Claims - pp395 - 398
doi:10.1038/scientificamerican06201868-395
