Table of contents
January 31, 1880, Volume 42 No 5 pp63-76
About the coverBusiness and Personal
Books
Notes and Queries
Index of Inventions
Top of page
Top of pageArticles
Application of Dynamo-Electric Machines to Telegraphy - pp63 - 64
doi:10.1038/scientificamerican01311880-63
The Past Year's Work in the Patent Office - p65
doi:10.1038/scientificamerican01311880-65b