Table of contents
April 3, 1875, Volume 32 No 14 pp207-221
About the coverBusiness and Personal
Notes and Queries
Index
Top of page
Top of pageArticles
The Saxby and Farmer Safety Switches and Signals - pp207 - 208
doi:10.1038/scientificamerican04031875-207
Recent American and Foreign Patents - pp216 - 218
doi:10.1038/scientificamerican04031875-216