480 ELS, Dana—Mineralogical Notes; Apatite. 
2. APATITE, 
Several years ago the writer, through the kindness of Mr. 
Samuel R. Carter of Paris, Me., was able to examine a crystal 
of apatite of so unusual form as to deserve a special notice. 
he examination was completed at that time but the results 
are now for the first time published. The crystal was from the 
tourmaline locality at Paris, Me., and when received was partly 
coated by a film of cookeite which, however 
O (0001, c) } (7073, w)* 
I (ioto, 7) 3 (3031, 2) 
(1120, #) 9-9 .(1121;'8) 
+4(i-§) (74150, hk) = +- (2-4) (73142, 0) 
4 (1012, r) +(3-3) (72131, m) 
1 (1011, a) +(7-1) (74371, 9)* 
2 (2021, y) —(4-4) (71341, n) 
Of these planes, the two marked by an asterisk are new to the 
species, namely 4 (w), which was determined by the fact of its 
eing in the zone J to O, and also in the zone between m and 
m (2131 and 3211). The form 7-3 (g) was determined in part 
by the zone 7-2, 3-$, etc. (1120, 2131), and also by the measured 
angle on 7-2=11° to12°. The planes g were uniformly rough 
‘and allowed of only approximate measurements. The calcu- 
lated angles for both these forms (taking ¢=0°784608 as given 
by Kokscharof) are : | 
On% , 00017073 = 63°12’ 
In% , 10107073 = 26 48 
On7-§, 0001.4371 = 79 2 
Tn7-j, 10104371 = 27 25 
2-7-4, 1120,4371 = 11 56 
