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Scientific American 1894-10-20

ScientificAmerican1894-10-20.jpg Scientific American 1894-08-04ThumbnailsScientific American 1894-12-29Scientific American 1894-08-04ThumbnailsScientific American 1894-12-29Scientific American 1894-08-04ThumbnailsScientific American 1894-12-29Scientific American 1894-08-04ThumbnailsScientific American 1894-12-29Scientific American 1894-08-04ThumbnailsScientific American 1894-12-29

The great Chicago Canal. The New Era grader. The high power steam derrick. The Bates hydraulic dredge. The Brown cantilevers. Cable hoisting and transferring machinery.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner