Table of contents
December 11, 1909, Volume 101 No 24 pp426-453
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Sea Strength of Principal Naval Powers - p426
doi:10.1038/scientificamerican12111909-426a
The Reclamation of the Arid Lands of the West - pp428 - 429
doi:10.1038/scientificamerican12111909-428
The Wonderful Iron Mines of Lake Superior—How the Ore is Mined and Carried in Bulk - pp430 - 431
doi:10.1038/scientificamerican12111909-430
The Proposed Lakes-to-the-Gulf Deep Waterway - pp433 - 436
doi:10.1038/scientificamerican12111909-433
American Harvesting Machinery—The Birth and Growth of a Vast Industry - pp437 - 440
doi:10.1038/scientificamerican12111909-437
Gary: The Largest and Most Modern Steel Works in Existence - pp441 - 443
doi:10.1038/scientificamerican12111909-441
The Handling and Storage of our Huge Grain Crop - pp444 - 445
doi:10.1038/scientificamerican12111909-444
Chicago and the Railroad System of the Middle West - pp446 - 447
doi:10.1038/scientificamerican12111909-446
Chicago's Sixty Miles of Freight Subway - p448
doi:10.1038/scientificamerican12111909-448a