Features
“Equidistant Gear Cutters”
Centrifugal Ship's Pump
Launch of the Colossus
Large Plate-Shears
The Pennsylvania Steel Company
The Progress of the Metallurgy of Gold and Silver in the United States
Gold and Its Manufactures
Watch Cases, Their Uses, Materials, and Qualities
The Manufacture of Cloisonne at Peking
English Universities
The Manufacture of Powder
The Influence of Mathematics on the Progress of Physics
Photographic Notes
The Action of Quinine and Salicylic Acid on the Ear
The Action of Quinine and Salicylic Acid on the Human Ear
Discharge of Electricity by Heat
Why We Cough and How We Cough
Adulteration of Drugs in England
Storage of Electricity
Ear Disease
Simple Directions for Collecting, Preserving, and Packing Insects
Possible Food Plants for the Cotton-Worm
Experiments with Caged Pythons
Mexican Caves With Human Remains
A New Gentian
Malaga Raisins
On the Conservation of Solar Energy
Constituency of Wood
The Timber Line
Ironwood Tree
Departments
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Patents
