S§8 BARYTE GENUS. rtf?' ''.' I fecond beviilment twice broken; fometiines the edges of the obtufe, and more rarely : . ; 3vT edges of the acute bevillment, are trun- ,f . - cated. ... t . _ .-.I • U; di By the increafe of the bevillment, on all the j terminal edges, the tranfition ( is.made into the rectangular table, bevilled on the ter- said r' minal planes. 7 • ..a, j , 2. Rcclangular four-fidcd table.- , - 7 a. Perfect ' t b. All the terminal planes bevilled, and the Aid pa - remaining part of the planes fprm trunca- «-r tions on the angles; when thefe trunca- tions increafe, the four-Tided paffes into c. An eight-fided table, which prefents the fol lowing varieties:— «. '1 runcated on all its lateral edges. 0. Having all its terminal planes bevilled, and the edges of the bevillments truncated. S. The bevilhnents in c. are fomeiimes round ed off, and thus a kind of lens is formed" The planes of the cryAals are linooth, generally fplendent and pearly. Internally its luflre is Aiming, which fometim^ approaches to fplendent, fometimes to gliftening, is commonly intermediate between pearly and vlt treous. Fra^ urf