Table of contents
Recently Patented Inventions
Business and Personal
Notes and Queries
Index
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National Electric Light Association - pp176 - 177
doi:10.1038/scientificamerican09191891-176a
The System of Military Dove Cotes in Europe - p179
doi:10.1038/scientificamerican09191891-179
Improvement of Potomac Flats, Washington - pp180 - 181
doi:10.1038/scientificamerican09191891-180
The Lava Plains of Idaho - pp182 - 183
G. F. Wright, D. D.
doi:10.1038/scientificamerican09191891-182