Table of contents
Recently Patented Inventions
Books
Business and Personal
Notes and Queries
Index
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The New Copyright Bill Now Before Congress - pp17 - 18
doi:10.1038/scientificamerican01101891-17
The Malleco Viaduct, Chilian State Railway, Collipulli, Chili - p21
doi:10.1038/scientificamerican01101891-21
Interesting Optical Illusions - p22
Geo. M. Hopkins
doi:10.1038/scientificamerican01101891-22
The Sign Language of the American Indians - pp23 - 25
doi:10.1038/scientificamerican01101891-23
The Magnetic Magnifying Glass and the Box of Numbers - p25
doi:10.1038/scientificamerican01101891-25