Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 178
case, a second scale-nohedron, differing from the first only in position.The two are distinguished, like the rhombohe-drons, as positive and negative scalenohedrons.The scalenohedron, which is derived from theprincipal dihexagonal pyramid, will be calledthe principal scalenohedron, and its symbol… … ma : axp a lb.
Matter · Heat
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