Considerations Before Opening Mines
Legal and Other Matters
Volume 74, Issue 1906supp
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Features
Methods of Testing Coatings for Cement Surfaces
Most Preparations on the Market Have Not Yet Stood the Test of Time
Ceylon: The Island of Jewels
A Rich Industry Monopolized by the Natives
A Review of Animal Experimentation—I
Its Benefits to Mankind
Railroad Building in Alaska
A Remarkable Railway Engineering Feat
Wool Pulling
How the Fleece is Separated from Sheeps' Hides
Wireless Telegraphy in Railway-ferry Service
A New Method of Color Photography
A One-Plate Process Without Pigment
Tests of a Simple Engine
Taking Steam at Less Than Atmospheric Pressure
Wires as a Remedy for Defective Acoustics
Elements of Theoretical Aeromechanics
Part I.—Aerostatics
Colloids and Colloidal Solutions
Some Examples from Everyday Life