Table of contents
Correspondence
Business and Personal
Books
Notes and Queries
Index of Inventions
Top of page
Top of pageArticles
The Use of Steel for Structural Purposes - p304
doi:10.1038/scientificamerican05151880-304
The Registration of Trade Marks - pp304 - 305
doi:10.1038/scientificamerican05151880-304d
Improved Telephone Central Office Switch Board - p305
doi:10.1038/scientificamerican05151880-305b
The Gower System of Telephonic Communication, Paris - p307
doi:10.1038/scientificamerican05151880-307
A Copter on Trout - pp311 - 312
Daniel C. Beard
doi:10.1038/scientificamerican05151880-311
