W. VOIGT, 



II. Monoklines System. 



3) Holoedrische Gruppe (C). 



a = h = c = 0. 



4) Hemimorplie Gruppe {A^), [IP']. 



— c = 83, X, + 83, + 833 + 83, x^. 



5) Hemiedrische Gruppe (jEJJ. 



-a = 8,^X. + 8,,r^ + 8,3^, + 8,,X„, 



-b = 8,,x, + o,,r +Ö33^. + o,.x^, . 



— c = Sg.r^ + 63,^,. 



III. Rhombisches System. 



6) Holoedrische Gruppe (C). 



a = b = c = 0. 



7) Hemimorphe Gruppe {AI, [IP']- 



— a = o^^Z^, —6 = 8,,r„ 



— c = 83, X, + 83,7 + 833^^ + 83, X^. 



8) Hemiedrische Gruppe (AI, AI, AI). 



— a = 8j,r , —b = \^Z^, — c = 83,X^. 



IV. Quadratisches System, 



9) Holoedrische Gruppe (C). 



a = 6 = c = 0. 



10) Hemimorph-hemiedrische Gruppe {A\, EJ, [IP*]. 



— a = o.^Z , — 6 = 0,. F , 



lo X 7 \o ZI 



~c = 83.(X,+ rj+633^, 



11) Trapezoedrisch-hemiedrische Gruppe {A*, ä^J. 



~a = o^,Y^, ~b = -o^,Z„ c = 0. 



12) Pyramidal-hemiedrische Gruppe {G). 



a = b = c — 0. 



