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Articles

Improved Method of Operating Valves p353

doi:10.1038/scientificamerican07171858-353


Seasonable Information pp353 - 355

doi:10.1038/scientificamerican07171858-353a


Seasonable Information p353

doi:10.1038/scientificamerican07171858-353b


Patent Claims pp354 - 355

doi:10.1038/scientificamerican07171858-354


Recent Patented Improvements p355

doi:10.1038/scientificamerican07171858-355


New Patent Hydrant p356

doi:10.1038/scientificamerican07171858-356


The Maryland Institute p356

doi:10.1038/scientificamerican07171858-356a


The Patent Office Bureau p356

doi:10.1038/scientificamerican07171858-356b


The Patent Office Bureau p356

doi:10.1038/scientificamerican07171858-356c


The Geology of North America p357

doi:10.1038/scientificamerican07171858-357


Smallpox and the Poor p357

doi:10.1038/scientificamerican07171858-357a


Our Board of Health Again p357

doi:10.1038/scientificamerican07171858-357b


Important to Patent Agents and Lawyers p357

doi:10.1038/scientificamerican07171858-357c


Ingenuity Wrongly Applied p357

doi:10.1038/scientificamerican07171858-357d


Deferred Articles p357

doi:10.1038/scientificamerican07171858-357e


Goodyear's Patent Extension p358

doi:10.1038/scientificamerican07171858-358


Correspondents p359

doi:10.1038/scientificamerican07171858-359


To Our Subscribers p359

doi:10.1038/scientificamerican07171858-359b


To our Subscribers p359

doi:10.1038/scientificamerican07171858-359b


Treatment of Copper Ores p360

doi:10.1038/scientificamerican07171858-360


Improved Grain Cleaner p360

doi:10.1038/scientificamerican07171858-360a


Sniff's Sausage Machine p360

doi:10.1038/scientificamerican07171858-360b


How to Dye Green with Picric Acid p360

doi:10.1038/scientificamerican07171858-360c


Mechanics p360

doi:10.1038/scientificamerican07171858-360d


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