ScientificAmerican1901-11-02.jpg Popular Science 1946-08ThumbnailsSt. Nicholas 1919-05Popular Science 1946-08ThumbnailsSt. Nicholas 1919-05Popular Science 1946-08ThumbnailsSt. Nicholas 1919-05Popular Science 1946-08ThumbnailsSt. Nicholas 1919-05Popular Science 1946-08ThumbnailsSt. Nicholas 1919-05
Waste-heat auxiliary engine of 100 horse power at the Technical High-School, Charlottenburg, Prussia. Vaporizer and condenser. Berlin electrical power station. Vaporized sulphur dioxide gas being used expansively in a separate cylinder.



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

Restoration by: magscanner