Table of contents
July 19, 1873, Volume 29 No 3 pp31-46
About the coverBusiness and Personal
Notes and Queries
Index
Top of page
Top of pageArticles
Recent Improvements in Torpedo Warfare - pp31 - 32
doi:10.1038/scientificamerican07191873-31
Underground Railways in American Cities - pp32 - 33
doi:10.1038/scientificamerican07191873-32d
Cummings' Steam Mowing, Reaping, and Thrashing Machine - p35
doi:10.1038/scientificamerican07191873-35a
En Route to the Great Exposition—Letter from United States Commissioner Professor R. H.Thurston - p36
doi:10.1038/scientificamerican07191873-36a
Recent American and Foreign Patents - pp41 - 42
doi:10.1038/scientificamerican07191873-41a
Value of Patents, and How to Obtain Them Practical Hints to Inventors - p42
doi:10.1038/scientificamerican07191873-42
