Table of contents
Recently Patented Inventions
Books
Business and Personal
Notes and Queries
Index
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Low Water Alarm and Flue Cleaning Device for Steam Boilers - p212
doi:10.1038/scientificamerican04051890-212b
An Improved Means of Channel Protection - p212
doi:10.1038/scientificamerican04051890-212c
A Portable Lemonade Holder and Glass Washer - p213
doi:10.1038/scientificamerican04051890-213c
A Nut and Washer for Vehicle Axles - pp213 - 214
doi:10.1038/scientificamerican04051890-213d
Automatic Recording Signal for Railroads - p219
doi:10.1038/scientificamerican04051890-219
Queen's New Triple Plate Toeplee-Holtz Machine - p219
doi:10.1038/scientificamerican04051890-219a