Volume 49, Issue 1262supp
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Features
The Arrow Point Spearheads and Knives of Prehistoric Times
Cruise of the “Albatross.”—III
The Increasing Productiveness of Labor, A Result of Invention
The Problem of Honeycomb
Santa Ana Canal
Are Further Experiments needed for Determining the Atomic Weight of Oxygen
Materia Medica; Ancient and Modern
War Automobiles
Gun-Drill on a German Training-Ship
Pearl Fisheries of the Dutch East Indies
Origination of Printing Types by Photographic Methods
Trade Notes and Receipts
Selected Formulae
Trade Suggestions from United States Consuls
Working Drawings of an Electric Cab
Pictures Produced on Photographic Plates in the Dark
The Industrial Production of Ozone
Report of the Commissioner of Patents to Congress for the Year Ending December 31, 1899
Department of the Interior, United States Patent Office