116 



BELL SYSTEM TECHNICAL JOV RNAL 



Triclinic pinacoidal, (center of symmetry) h = (Class 2) 



,0 ,0 , //14 , , /?16 



hii , lin , fhz ,0 , //26 , 

 ,0 ,0 , //34 , , /;,6 

 hn , Ih2 , hn ,0 , /7i6 , 

 ,0 ,0 , /724 , ,ht 



hi , /'32 , /'33 , , hsB ,0 



Monoclinic prismatic (center of symmetr>0 h = (Class 5) 



,0 ,0 , /7i4 , ,0 

 ,0 ,0 ,0 ,//26,0 

 ,0 ,0 ,0 ,0 ,//36 

 ,0 ,0 ,0 ,/;i6,0 

 ,0 ,0 , //24 , ,0 



/?31 , //32 , //33 , ,0 ,0 



Orthorhombic bipyramidal (center of s}mmetr>-) // = (Class 8) 



, 0,0, liu , liib , 



Monoclinic Sphenoidal (Class 3) Y is 

 binary axis 



Monoclinic domatic (Class 4) Y plane 

 is plane of symmetry 



Orthorhombic bisphenoidal (Class 6) 

 X, Y, Z binary axes 



Orthorhombic pyramidal (Class 7) Z 

 binary-, X, Y, planes of s\Tnmetry 



Tetragonal bisphenoidal (Class 9) 

 Z is quaternar}^ alternating 



Tetragonal pyramidal (Class 10) Z 

 is quaternar}' 



, 0,0, -//15, /7l4,0 



//31 , -/'31 , , 0,0, //36 



,0 ,0 , Ihi , //15 , 



,0 ,0 ,//l5, -//i4,0 



//31 , //31 , //33 , , ,0 



Tetragonal scalenohedral (Class 11) / I ,0 ,0 , liu ,0 ,0 



quaternar\'. A' and I' binary ,^ ,^ ,, ,, , n 



^ ' , , , , //i4 , 



,0 ,0 ,0 ,0 , //36 



Tetragonal trapezohedral (Class 12) jO ,0 ,0 , Im , ,0 



Z quaternar^^ A' and F binar^^ 0.0,0,0, -/;. , 



I , , , , 0,0 



(135) 



