138 
Dr. Aristides Brezina. 
[ 20 ] 
Substanz 
System und 
Modus 
r 
Substanz 
System und 
Modus 
r 
K 2 Sn Cl 6 
Vll. 14. 
1-6274 
KBr 
Vll. 12. 
1-5340 
(NH 4 ) 2 Si Fe . . . . 
1-3632 
KCl 
1-460 
KJ 
1-6235 
Ba N 2 0 6 
Vll. 14. 
1-5470, 
NH 4 CI 
1-617 
Pb N 2 0 6 
1-7322 
nh 4 j 
1-6535 
K 2 Al 2 S 4 O i8 24 H 2 0 . 
VII. 14. 
1-4424 
Na CI 
1-5259 
(N1I 4 ) 2 Al 2 S 4 0 16 24 H 2 0 
1-449 
K 2 Fe 2 S 4 0,g 24 1I 2 0 . 
1-4649 
(NII 4 ) 2 Fe a S 4 0, 8 24 II 2 0 
1-4684 
K 2 Al a Se 4 0,g 24 II 2 0 
1-4657 
(K, NII 4 ) 2 (Al, Fe) 2 S 4 
0,6 24 ILO . . 
1 -4549 
| 
Substanz 
System 
und 
Modus 
Axen- 
verhält- 
niss| 
CO 
s 
Doppel- 
brechung 
K 2 S 2 0 6 
VI. 11. 
0-6467 
1-4455 
1-4973 
+ 0-0680 
R/b 2 S 2 Og 
0-6307 
1-4472 
1-4889 
+ 00552 
Sr S 2 0 6 4 II 2 0 .... 
VI. 11. 
1-5024 
1-5138 
1-5135 
— 0 0004 
Pg S 2 Og 4 1I 2 0 .... 
1-5160 
1-6069 
1-6280 
+ 0-0258 
Ni Se 0 4 6 II 2 0. . . . 
V. 10. 
2-6032 
1-5216 
1-4959 
+ 00347 
Zn Se 0 4 6 H 2 0 . . . 
2 6794 
1-5119 
1-4878 
+ 00327 
Ni S 0 4 6 I1 2 0 .... 
2-6961 
1-4962 
1-4739 
+ 0 0305 
KH 2 As 0 4 
V. 9. 
0-9380 
1-5474 
1-5017 
— 0-0631 
KH 2 PO, 
09391 
1-4955 
1-4579 
— 0 0658 
NH 4 H 2 As 0 4 . . . . 
1-0035 
1-5553 
1-5052 
— 0-0664 
nh 4 h 2 P 0 4 .... 
1-0076 
1-5088 
1-4682 
— 0-0561 
