Inventors at work, with chapters on discovery
George Iles's 1906 popular history of invention and discovery, published in New York by Doubleday, Page & Company for general and young readers. Wood-engraved and line diagrams show clamps, screws, presses, coils, cylinders and bench apparatus in section and perspective, with dense hatching and cross-hatched shading useful for technical cutaway motifs and mechanical spot illustrations.
