Subway Competition and Cheap Fares
The Vanderbilt Water-Tube Boiler for Locomotives
Our Heritage of the Mechanical Arts--II
An Efficient Disk Transmission for Automobiles
The-Virgin Lace (Lace-Bark) of the Tropics
New Masonry Drydock at the Boston Navy Yard
The Cooper Hewitt Mercury Vapor Converter
How Hydrographic Charts are Made
By Felix Reisenburg, Late of United States Coast and Geodetic Survey.
Harnessing the Victoria Falls for Electrical Power
By the English Correspondent of the Scientific American.
Pompeiian Silver Ware
By the Paris Correspondent of the Scientific American.
Novel Method of Logging Small Tracts
Photographing Leaping Fishes
Business and Personal Wants
READ THIS COLUMN CAREFULLY.--You will find inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us at once and we will send you the name and address of the party desiring the information. In every case it is necessary to give the number of the inquiry, MUNN & CO.
The Heavens in May - April 29, 1905
Recently Patented Inventions - April 29, 1905
Notes and Queries - April 29, 1905
Index of Inventions - April 29, 1905
Patents - April 29, 1905