Scientific American Magazine
Volume 26, Issue 15You are currently logged out. Please sign in to download the issue PDF.
Features
Portable Spring Grist Mill, Price's Composition Pavement and more
The Tobacco Manufactories in Brooklyn
The Government Works at Hell Gate
Palmer's Stave Jointing Machine
The Discovery and History of the Chromosphere
Frictional Gearing
A Patent Office Curiosity, and a Specification in Rhyme
Society of Arts of the Massachusetts Institute of Technology
Valuable Photographic Improvement
Scientific and Practical Information - April 6, 1872
The Holtz Electrical Machine
Friction Gearing II
Currier's Tea and Coffee Pot Stand
Kehoe's Improved Striking Bag
African Diamonds--An Invention Wanted
Epidemics of Disease, Disaster, and Crime
A Remarkable Telegraphic Improvement
Small Pox--Its Prevention--The Treatment of Patients with Reference to the Protection of the Public
The Present Status of Organic Chemistry
Recent American and Foreign Patents - April 6, 1872
Departments
Correspondence - April 6, 1872
Business and Personal - April 6, 1872
Answers to Correspondents - April 6, 1872
Notes and Queries - April 6, 1872
Index of Inventions - April 6, 1872
New Books and Publications - April 6, 1872
