Skip to main content


Portable Spring Grist Mill, Price's Composition Pavement and more

The Government Works at Hell Gate

The Tobacco Manufactories in Brooklyn

Palmer's Stave Jointing Machine

A Patent Office Curiosity, and a Specification in Rhyme

The Discovery and History of the Chromosphere

By J. H. Leach

Frictional Gearing

By E. S. Wicklin

Friction Gearing II

By E. S. Wicklin

Valuable Photographic Improvement

The Holtz Electrical Machine

Society of Arts of the Massachusetts Institute of Technology

Scientific and Practical Information - April 6, 1872

Currier's Tea and Coffee Pot Stand

Kehoe's Improved Striking Bag

A Remarkable Telegraphic Improvement

Small Pox--Its Prevention--The Treatment of Patients with Reference to the Protection of the Public

Epidemics of Disease, Disaster, and Crime

African Diamonds--An Invention Wanted

The Present Status of Organic Chemistry

Recent American and Foreign Patents - April 6, 1872


  • From the Editor

    Answers to Correspondents - April 6, 1872

  • Letters

    Correspondence - April 6, 1872

  • Recommended

    New Books and Publications - April 6, 1872

  • Departments

    Business and Personal - April 6, 1872

  • Notes and Queries - April 6, 1872

  • Index of Inventions - April 6, 1872

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
April 06, 1872

20% Sitewide for President's Day