Scientific American Magazine
Volume 81, Issue 7You are currently logged out. Please sign in to download the issue PDF.
Features
Postage and the Export Trade
A National Park in the East
The Factor of Safety in Yacht Construction
The Production of Slate
Our Foreign Trade for the Last Fiscal Year
Science Notes
Some Soda Water Fountain Statistics
Improvements in Our Tobacco
A New Miner's Drill
The "Polyphone"--Attachment for Phonographs
The Crankshafts of the Liner "Deutschland"
An Electric Brougham
The Boxing Kangaroo
Fuel Gas
Tree Dwelling in California
"Columbia" and "Shamrock"--A Comparison
Departments
Correspondence - August 12, 1899
Recently Patented Inventions - August 12, 1899
Business and Personal - August 12, 1899
Notes and Queries - August 12, 1899
Index of Inventions - August 12, 1899
Patents - August 12, 1899
