524 
MEASUREMENTS OF CRYSTALS. 
SPHENE. (Continued.) 
Figs. 521, et seq. 
M 
or 
M'on a .... 
.... 139°30' 
P 
on 
a . 
.... 159 
44 
P 
on 
c . 
.... 140 
52 
P 
on 
e 2 . 
.... 158 
18 
P 
on 
. 
.... 146 
30 
c 
on 
d L .. 
.... 146 
44 
c 
on 
6 2 --- - - - - 
.... 145 
18 
c 
on 
. 
.... 154 
52 
<Zi 
on 
d, . 
.... 113 
24 
d 2 
on 
d 2 . 
.... 136 
0 
e 2 
on 
. 
.... 136 
50 
e„ 
on 
. 
. ... 113 
40 
WARWICKITE. Figs. 529 and 530. Page 43G. 
Fig. 529. The primary, an oblique rhom¬ 
bic prism. 
M on M' _. 
WARWICKITE. 
Fig. 539. A modification of the pre¬ 
ceding. 
MOLYBDENITE. Fig. 531. Page 438. 
Fig. 531. The primary, a regular six- 
sided prism. 
M on M . 120° 0' 
ORPIMENT. Fig. 532. Page 439. 
Fig. 532. The primary, a right rhombic 
prism. 
M on M' . 100° O' 
ALLANITE. Fig. 533. Page 440. 
Fig. 533. A secondary form. 
M on P about 
M on r .... 
P on r . 
93° to 94° 
115° 
128 
116 
