Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 436
arallelthereto, the chances are that the crack indicates a seam. At this point let us for a few moments leave the field ofmechanics, and notice how inferring cause from effect may aidstudents of rocks, of the heavens, of the human frame. A geolo-gist, observing a dense limestone, learns how severe… … Square-root extractor.Wedge displaces water as the squareof its depth of immersion. 378 THEORIES to southward, disclose to him the paths in which ages ago theglaciers moved from their birth-places in the polar zones. Inastronomy a feat of inference incomparably more difficult wasaccomplished by…
Inventions · Inventors
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