Table of contents


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Departments

Correspondence

Correspondence p213

doi:10.1038/scientificamerican04021892-213


Recently Patented Inventions

Recently Patented Inventions p218

doi:10.1038/scientificamerican04021892-218


Business and Personal

Business and personal p219

doi:10.1038/scientificamerican04021892-219


Notes and Queries

Notes and Queries p219

doi:10.1038/scientificamerican04021892-219a


Index

Index of Inventions pp219 - 220

doi:10.1038/scientificamerican04021892-219c


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Articles

The Hackensack Water Company p207

doi:10.1038/scientificamerican04021892-207


The Grounding of the Neutral Wise in the Three-Wire System p208

doi:10.1038/scientificamerican04021892-208


Position of the Planets in April p209

doi:10.1038/scientificamerican04021892-209


An Improved Wool Drying Machine p210

doi:10.1038/scientificamerican04021892-210


Twelve-Wheeled Freight Locomotives p210

doi:10.1038/scientificamerican04021892-210a


An Improved Cigar Measure p211

doi:10.1038/scientificamerican04021892-211


An Improved Feed Water Heater p211

doi:10.1038/scientificamerican04021892-211a


An Improved Elevated Railway p211

doi:10.1038/scientificamerican04021892-211b


Photographic Notes p211

doi:10.1038/scientificamerican04021892-211c


An Automatic Pump Regulator pp211 - 212

doi:10.1038/scientificamerican04021892-211d


A Draw Shell Lime Kiln pp215 - 217

doi:10.1038/scientificamerican04021892-215


Charles J. Van Depoele p217

doi:10.1038/scientificamerican04021892-217


To Inventors p219

doi:10.1038/scientificamerican04021892-219b


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