Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 188
the other in all its chemical relations, butdiffering in its crystalline form, and rotating the plane of polari-zation to the left. The sphenoid is the only hemihedral form in this system whichencloses space, and which therefore could alone form a crystal.Other hemihedral forms have been observed,… … MoNOCLiNic System.Simple Forms. In the monoclinic system, as has been already stated, no singlecrystalline form can enclose space; and hence we have no simplecrystals. Fig. 151 represents an octahedron belonging to thissystem; but this is not a simple crystal,because it is bounded by faces of two…
Matter · Heat
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