Volume 104, Issue 25
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Features
Sir Hiram Maxim
The Autobiography of a Veteran Inventor
Our National Earthquake Recorder
Feeling the Earth's Pulse
Uncovering the "Maine"
How the Work at Havana is Progressing
Identification of Dye Woods, New Aeroplane Speed Records in France
John D. Hooker and the One Hundred-inch Reflector
A Business Man Who Took an Interest in Astronomy
Longer Piers for Giant Steamships
Arrival of the 882 1/2-foot "Olympic" at New York
Dynamite as a Railroad Builder
High Explosives as One of the Principal Agents in the Building and Reconstruction of Our Railroads
Catskill Water Supply Tunnel Below the Hudson River
How the Aqueduct Will Make an 1100-foot Dip Below the Gorge
Abstracts from Current Periodicals - June 24, 1911
Phases of Science as Other Editors See Them
Learning How to Fly
Hints from a Professional Aviator
How to Rebore an Engine Cylinder on a Common Lathe
Fishing for Bolts
A Good Glue Clamp
The Inventor's Department - June 24, 1911
Simple Patent Law; Patent Office News; Inventions New and Interesting