577 



Ab- 



Sym- 



Sym- 



Nr. 



Typus 

 I. Ordnung 



Charakteristische Zahlen 



Symbol 

 des Systems 



leitungs- 

 form 



metrie- metrie- 

 art grosse 



Explicite 

 Symmetrie 



Verbandsymmetrie 



^11 

 a 



o 



g 



g 



b V 

 "vT 







25 

 25 

 25 

 25 

 26 



12 

 12 

 12 

 12 

 12 



1 

 2 

 3 



4 

 1 



141V 

 15 IV 

 15 a IV 



12' 

 12' 

 18' 

 18' 

 18' 



g 3 4' 

 a'~ 1112' 

 g 11 12' 

 a' 3 4' ■ 

 g 3 10' 

 g' 6' 11 

 g 6' 11 

 g' "" 3 10' 



VQ ^ 5 6' 

 '^=^^ 6'=910' 



(36) (3 IV)^ 



(37) (3 IV)^ 



(36) (3 IV'),! 



(37) (3 IV'),' 

 147rl(3IV') 



8 



8 



1 



8 



8 



2 



8 



8 



3 



8 



8 



4 



8 



8 



5 



8 



8 



6 



8 



8 



7 



8 



8 



8 



8 



8 



9 



8 



8 



10 



8 



8 



11 



8 



8 



12 



8 



8 



13 



8 



8 



14 



8 



8 



15 



8 



8 



16 



8 



8 



17 



8 



8 



18 



8 



8 



19 



Tetraparalleloädersys 



5z IV 



eme VIII. Ordnung. 



2' 



r 



7' 

 V_ 



T 



2^ 

 7' 

 8^ 

 7' 

 2' 



T' 



,§! 



T 



1/ 



2' 

 1/ 

 8' 



2' 



■X. b 



g = 1' 

 g= 1' 

 g = 2 

 g = 8 



a 



1' 



g= 1' 

 a = 2 



= 2 

 = 8 

 = 2 

 = 8 



= 7 

 = 7 

 = 7' 

 = 7' 

 = 7 

 = 7 

 = 8 



2 



2^ 



^7 

 8^ 

 7 

 7^ 



^8' 

 7_ 

 2' 

 2^ 



^7' 

 8_ 



' T 

 T 



Abh. d. IL Gl. d. k. Ak. d. Wiss. XX. Bd. II. Abth. 



3 (x 4) (1 IV)^'.8, 



3(;^4)(1IV)S:8, 



U(xl){\m\,,, 



14(;;l)(lIV)j;, 



3(/4)(lIV)*.7. 



3(;.4)(1IV)^V 



2(;t5)(lIV)^,7. 



2(;f5)(lIV)i',8, 



3(/2)(lIV);',2, 



3(;^2)(1IV)J<8, 



2(x2)(lIV)J,2- 



2(;.2)(1IV)J,8, 



2(z4)(lIV)^-, 



2(z4)(lIV)?8- 



2(z5)(lIV)';8' 



2(z5)(lIV)^'-, 



14(/1)(1IV)*,, 



14(zl)(lIV)^8 



14(;^2)(1IV)^8 



74 



