Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 239
selves into its structure as if theyknew where to go. This unity of effect may be observed duringa northern winter on a scale much more striking. In coldweather on a large sheet of plate glass exposed as a window, afrost pattern will extend itself as if a tree, beautiful branches 194… … Alum crystal. After a part has Restored by im- been broken off. mersion in alum solution.From photographs by Herr Hugo Schmidt, Hackley School, Tarry-town, N. Y. in spaces comparatively vast, is astonishing. Forces of allied char-acter rise to a plane yet higher in vegetation, culminating in…
Inventions · Inventors
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