Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 155
s. 72, 73, and 74 are simple, because in each case all theplanes which bound the crystal have the same parameters. Onthe other hand, the crystals represented by Figs. 75, 76, and 77are compound crystals, because there are two or more sets ofplanes on each crystal, of which the planes have different…
Matter · Heat
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
