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Departments

Correspondence

Correspondence pp115 - 118

doi:10.1038/scientificamerican02181871-115b


Business and Personal

Business and Personal p122

doi:10.1038/scientificamerican02181871-122


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Articles

Improved Water Grate and Steam Generator, How Eyes are Made pp111 - 112

doi:10.1038/scientificamerican02181871-111


Enameling Wood Work pp112 - 113

doi:10.1038/scientificamerican02181871-112


A New Stone p113

doi:10.1038/scientificamerican02181871-113


Exercising Club p114

doi:10.1038/scientificamerican02181871-114


The Present and the Past p114

doi:10.1038/scientificamerican02181871-114a


Knapp's Fluting and Flat Iron p114

doi:10.1038/scientificamerican02181871-114b


Agricultural Patents of the Year p115

doi:10.1038/scientificamerican02181871-115


Perpetual Motion p115

doi:10.1038/scientificamerican02181871-115a


Kerosene Murder p119

doi:10.1038/scientificamerican02181871-119


Organic Matter in Water p119

doi:10.1038/scientificamerican02181871-119a


Stone Cutting by Machinery p119

doi:10.1038/scientificamerican02181871-119b


The Electro Deposition of Copper and Brass pp119 - 120

doi:10.1038/scientificamerican02181871-119c


The Uses of Apatite p120

doi:10.1038/scientificamerican02181871-120


The Average City Dwelling House pp120 - 121

doi:10.1038/scientificamerican02181871-120a


Annual Report of Commissioner of Patents p121

doi:10.1038/scientificamerican02181871-121


New Patent Law of 1870 pp121 - 122

doi:10.1038/scientificamerican02181871-121a


Answers to Correspondents p122

doi:10.1038/scientificamerican02181871-122a


Queries p122

doi:10.1038/scientificamerican02181871-122b


Recent American and Foreign Patents p123

doi:10.1038/scientificamerican02181871-123


Applications for Extension of Patents p123

doi:10.1038/scientificamerican02181871-123a


Official List of Patents p123

doi:10.1038/scientificamerican02181871-123b


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