Scientific American, Vol. 30, No. 7 (1874)
Scientific American volume 30, number 7 from 1874, a weekly American periodical of mechanical and industrial news printed in New York for engineers, inventors and mechanics. Its pages carry wood-engraved diagrams of machinery, ships, and household or building fittings, with short captions beneath each plate. The four pictures show an improved gaining machine on a bench, a cutaway of a floating saloon with a spiral stair, a clerk at a desk with two onlookers, and a ventilating duct set into a brick wall beside an ornate iron grille, offering a designer dense, precise linework of mechanical forms.
