ALLGEM. THEORIE DER ELECTR. ERSCHEINUNGEN AN KRYSTALLEN. 



4) Hemimorphe Gruppe {AD, [IP'^]. 



5) Hernie drisclie Grruppe 



a = £n^. + =i2^y+s,3^, + ^i6^,, 



III. Rhombisches System. 



6) Holoedrisclie Grruppe (C). 



a — h = c = 0. . . 



7) Hemimorplie Gruppe {A], E^, [1-P']- 



8) Hemiedrisclie Gruppe {A], A], A^). 



IV. Quadratisches System. 



9) Holoedrische Gruppe (C). 



a = b = c = 0. 



10) Hemimorph-liemiedrisclie Gruppe (A*, E^), [IP*]. 



11) Trapezoedrisch-hemiedrisclie Gruppe (A*, A^^. 



« = =142/.. ^ = — £u^.> c = 0. ■ 



12) Pyramidal-hemiedrische Gruppe (C). 



a = 6 = c = 0. 



13) Hemimorpli-tetartoedrische Gruppe (-4*), [1-P*]. 



c = hxix. + yy) + ^3s^.- 



