Volume 109, Issue 8
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Features
Teaching from the Child's Point of View
A New Science Created
The Vast Ore Deposits of Cuba, Treating Tuberculosis by Marine Micro-organisms and more
For illustrations see pages 146 and 147
Fighting in the Air, The Current Supplement and more
Buying and Selling Silver and Gold
The Scientific Side of the Assay Office at New York
Improvised Forge
Construction of a Water-tight Box
Lineman's Clamp from a Buggy Top, Workshop Notes
Cutting Keyways in a Lathe
A Variable Speed Groove-pulley
Expanding Socket for Screw Spikes, A New Noiseless Gear for Motor Cars and more
Flashlight Signaling for Railways
By Our English Correspondent