...Each of these historical changes was, of course, originallydue to adaptation; it was, in other words, physiological, and reducible tomechanical causes...
Ernst Haeckel 「The Evolution of Man」
...Themotive in is reducible to triangular and rectangular forms,and while exceptional as to their arrangement, no new decorative featureis introduced...
Jesse Walter Fewkes 「Archeological Expedition to Arizona in 1895」
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