Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 84
idesand square edges. Hence it has been easiest tobuild walls and floors which meet at rightangles, and to leave sharp corners on outerwalls, windows, doorways, and chimneys. Thisis being changed forthe better; in stair-cases the boards onwhich we tread andthose which join themtogether now meet… … Treads and risers joined by curves. 50 FORM-CURVES REPLACE ANGLES
Inventions · Inventors
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