Volume 31, Issue 806supp
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Features
The Working of an Electrolytic Copper Refinery
A Six Inch Quick Firing Gun
High Power Batteries
Improved Rope Railway—Aerial Carrier at the Laudun Sugar Works
Center Board Yachts on the Clyde
A Chronometer giving the 1/1000 Of a Second
Paint Oils
A Concentrated Rapid Hydroquinone Developer
History of the Cotton Industry
A Detective Photographic Camera
The New York “World”
Lippmann's Experiments in Photographing Colors
Combined Toning and Fixing Bath
African Notes
Exhibition at Budapest
Curious Musical Instruments
Adiabatic Compression and the Velocity of Sound
Memory
A New Method of Embalming and Preserving Animal and Vegetable Tissues
Pharmaceutical Etymology
Protection of the Apple Crop
The Culture of Figs
Fertilizers
Outline of the History of Commercial Fertilizers