TechnologyJuly 12, 1919
Bunkering Big Ships, The House of the Giant Dirigible R-33 and more
Some of the Modern Equipment for Putting Coal Aboard Ocean-Going Craft
Stories by J. F. Springer
EnvironmentFebruary 23, 1918
Building a Dam of Concrete Slabs
An Interesting Type of Construction Adopted in the Twin Cities River Improvement
EnvironmentOctober 30, 1915
The Great Gas Tunnel Under the East River
A Battle with Floods Two Hundred Feet Below Sea Level
TechnologyApril 17, 1915
Raising the "F-4," Are Obsolete Battleships Obsolete? and more
The SciencesJanuary 23, 1915
Inventions New and Interesting - January 23, 1915
Simple Patent Law; Patent Office News; Notes on Trademarks
The SciencesDecember 19, 1914
Looping the Loop in the Alps
The SciencesNovember 14, 1914
Ocean-going Log Rafts, On the Mat, and more
Including an Editorial on the Successes of Aerial Reconnaissance
The SciencesSeptember 19, 1914
The Micro-structure of Steel, The Dewey Decimal System for Filing Pamphlets, Clippings and Books
The SciencesAugust 15, 1914
The Unloading of Coal from and to Vessels, Searchlights of the German Fleet, and more
The SciencesDecember 27, 1913
The Great World Wireless Circuit
The SciencesMay 20, 1911
Measuring the Deviation of Bore Holes
The SciencesJanuary 7, 1911
The Squaring of the Circle
The SciencesNovember 5, 1910
Cold Forging
The SciencesOctober 15, 1910
Deep Excavation by Boring
The SciencesJune 25, 1910
The Wearing Qualities of Manganese Steel
The SciencesMarch 26, 1910
Thermal Treatment of Steel Ingots
The SciencesJanuary 8, 1910
Friction at Railway Curves
The SciencesNovember 6, 1909
Some Principles of Ball-Bearing Design
The SciencesSeptember 11, 1909
The Seven Bridges of Königsberg and Other Puzzles
The SciencesNovember 7, 1908
Metallographs, or Photographs of the Structure of Metal Specimens
HealthAugust 15, 1908
Color-Blindness
The SciencesApril 18, 1908
Is the Axis of the Earth Shifting?
HealthMarch 28, 1908
The Ever-Shifting Eyeball.--Some New Experiments and Some New Conclusions
The SciencesJanuary 4, 1908
Elimination of Friction in Ball Bearings
Importance of this Question in View of the Application of Such Bearings in Heavy Work Sources Of Friction Analyzed.