Volume 9, Issue 20
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Features
Bushnell's Self-Feeding Hand Drill
Tobacco at the North
Incrustations of Boilers
Import of Sperm and Whale Oil
A Ship Illuminated by Gas
Australian Enterprize
Hay Meal
The Bull-Bush Caterpillar of New Zealand
Imponderable Agents.—No. 7
[Second Series]
Quartz Crusher Experiments
Illumination—Gas Light
Why do Teeth Decay
List of Patent Claims
Awards of our Prizes
Cancer Cured
Old Coins
Californian Mastodon
Improvement in Railroad Tracks
Improved Turn-Table
Setting Carriage Axles
Governor for Marine Engines
Improvement in Devices for Rail Cars
Fastening Shoemakers' Tools to the Handles
Recent Foreign Inventions
Feeding Printing Presses
Purifying Fish Oils without Heat
Uniformity of Weights and Measures
Law of Freezing Water—Beautiful Adjustment
Cheap Ocean Postage
Application of Chloroform
The San Francisco
The Caloric Ship Ericsson
Crystal Palace
The Mackerel Fisheries
Foreign Scientific Memoranda
Cotton in the United States
Adulteration of Drugs and Medicines
Reports of the Crystal Palace Juries
Leeds' Patent Ventilator
Improved Auger Handle
To Prepare Pure Caustic Potash
On the Probable Depth of the Ocean of the European Chalk Deposits
Indelible Inks, and Paper
Papyri at Herculaneum
Trial of Pumps
Mechanics
Manufacturers and Inventors