OPTIC AXES IN HARMOTOME AND WOHLERITE. 
573 
Calculated. 
rSfH 134° 1' 
J g'a 3 115° 47' 
i 4 a\ 90° 
ro'm adj. 121° 2' 30" 
o'm 58° 57' 30" over e 1 
m adj. 135° 12' 
e 3 m ant. 116° 27* .' 
s-y nt. adj. 149° 30' 
| e x m ant. 125° 55' 
I a 1 m 76° 1' over e 1 
^ a 1 ® 103° 59 f over a 3 
I a 3 m adj. 140° 43' 
I a>a 3 143° 16' 
4 m ant. 134° 51' 
b\m 1 00° 58' over e\ 
a\ m adj. 121° 15' 
rV/i 3 adj. 130° 39' 
I o 1 e 2 147° 18' 
S e 3 h 3 93° 14' over b\ 
( b\ h 3 adj. 120° 5' 
o 1 g 3 adj. 109° 4' 
o 1 e\ 122° 5' 
4 g 3 post. 128° 52' 
dig 3 ant. 133° 12' 
e l g 3 ant. 128° 19' 
Cd\h 3 ant. 141° 20' 
I e 2 /i 3 114° 55' over d\ 
a>li 3 72° 14' over e 2 
a 1 k 3 adj. 107° 46' 
44 ant. 143° 34' 
a x g 3 82° 29' over 4 
a 1 g 3 97 31' over b i 
‘^44 adj. 149° 0' 
re 1 A 3 ant. 119° 33' 
I x h 3 98° 33' over e 1 
S a\ h 3 49° 3' over e 1 
(^<4 A 3 adj. 130° 57' 
r <pg 3 ant. 128° 33' 
J <p a\ 122° 16' 
[ adj. 109° 11' 
4 4 ant. 128° 30' 
e‘4 ant. 130° 21' 
e 1 4 post. 1 16° 8' 
4 rn post. 115° 11' 
44 post. 128° 32' 
<p m ant. 1 14° 48' 
f 4 ant. 133° 55' 
<p 4 post. 145° 26' 
Measured. 
115° 10' (Dx.). 
121° 55' (Dx.). 
135°, approx. (Dx.). 
126° 20', approx. (Dx.). 
75° 40', approx. (Dx.). 
103° 40'; 52' (Dx.) 
140° 2' to 141° (Dx.). 
143° 15' (Dx.). 
99 
130° 30'; 131° (Dx.). 
109° 6' (Dx.). 
132° 10', approx. (Dx.). 
128°; 128° 30' (Dx.). 
142°, approx. (Dx.). 
99 
72° (Dx.). 
98° 5' to 20' (Dx.). 
119° 52' (Dx.). 
99 
127° 40' to 128° (Dx.). 
128° 30', mean (Dx.). 
129°, approx. (Dx.). 
115° 55', mean (Dx.). 
11 4° to 115°? (Dx.). 
128° 50' (Dx.). 
114° to 115°? (Dx.). 
134° 30', approx. (Dx.). 
145° (Dx.). 
y — (^ l b\ 4) x-(b x b\h\). 
a=(b x b\h>) ?=(6*44). 
