Table of contents
Books
Business and Personal
Notes and Queries
Index
Patent Notes
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Section Seven of the Amendments to the Patent Statutes - p210
doi:10.1038/scientificamerican04031897-210
The Underground Trolley in New York City - pp210 - 211
doi:10.1038/scientificamerican04031897-210a
The “Rotary” Steam Engine - p211
R. H. Thurston
doi:10.1038/scientificamerican04031897-211
A New Automatic Screw Cutting Die Head - p212
doi:10.1038/scientificamerican04031897-212a
The Bertillon System of Identification by Measurement - pp214 - 215
doi:10.1038/scientificamerican04031897-214
The Glaciers of Greenland - pp216 - 218
Ralph S. Tarr
doi:10.1038/scientificamerican04031897-216a
Batchelor's Ripping Attachment for Sewing Machines - p218
doi:10.1038/scientificamerican04031897-218a