504 
MEASUREMENTS OF CRYSTALS. 
TOURMALINE. Figs. 356 to 373 inclusive. Page 
356. 
Fig. 356. The primary, an obtuse rhom- 
bohedron. 
P on P ___ 
.... 133°26' 
ig. 357, et seq. 
Pon/c .. 
.... 152°5P 
P on l .. 
.... 117 9 
P on n .... 
.... 156 43 
P Oil o .. 
.... 141 40 
P on s .. 
.... 113 13 
TOURMALINE. 
k on l ..... 90° O' 
icons . 90 0 
l on l ... 120 0 
l ono. 135 44 
l on s . 150 0 
n onn ..... 155 9 
tcons...... 102 26 
o ono. 103 20 
s ons .. 120 0 
