Volume 38, Issue 3
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Features
Drawing on the Blackboard
Natural History Collections as Educators
Preventing Collisions at Sea
Carbon Burned in an Electro-Chemical Battery
Government Scientific Work
Coal Dust Fuel
To Our Subscribers
The Colorado Mud Volcanoes
Lovegrove's Two-Horse Power Engine
The Regnier Electric Light
The Godfrey and Howson Puddling Furnace
Communications
Practical Mechanism
New Series—No. XXXVI.