Table of contents


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Departments

Correspondence

Correspondence pp197 - 198

doi:10.1038/scientificamerican03311883-197


Inventions

Recent Inventions p201

doi:10.1038/scientificamerican03311883-201


Business and Personal

Business and Personal p203

doi:10.1038/scientificamerican03311883-203


Notes and Queries

Notes and Queries p203

doi:10.1038/scientificamerican03311883-203a


Index

Index of Inventions pp206 - 207

doi:10.1038/scientificamerican03311883-203b


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Articles

Improved Filters pp191 - 196

doi:10.1038/scientificamerican03311883-191


Education for Mechanics p192

doi:10.1038/scientificamerican03311883-192


Analysis of Water p192

doi:10.1038/scientificamerican03311883-192a


Sites for Water Supplies p192

doi:10.1038/scientificamerican03311883-192b


Aspects of the Planets for April p193

doi:10.1038/scientificamerican03311883-193


Some Answers to Correspondents pp193 - 194

doi:10.1038/scientificamerican03311883-193a


New Fanning Apparatus p194

doi:10.1038/scientificamerican03311883-194


New Pile for Galvano Cautery p194

doi:10.1038/scientificamerican03311883-194a


Buggy Bow Spring p198

doi:10.1038/scientificamerican03311883-198


Improved Hat Holder p198

doi:10.1038/scientificamerican03311883-198a


The Nordenfelt Gun p198

doi:10.1038/scientificamerican03311883-198b


The Archer Fish pp199 - 200

doi:10.1038/scientificamerican03311883-199


Engineering Inventions p202

doi:10.1038/scientificamerican03311883-202


Mechanical Inventions p202

doi:10.1038/scientificamerican03311883-202a


Agricultural Inventions p202

doi:10.1038/scientificamerican03311883-202b


Miscellaneous Inventions p202

doi:10.1038/scientificamerican03311883-202c


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