94 EH. 8S. Dana—Chondrodiie jrom the Tilly-Foster Iron Mine. 
and beyond even alas measurements. The part avail- 
able showed @ faultless, also r* good; and less satistactory *s; 
r? andr. On the solid angle between C, r3, and r?, a large 
number of minute planes were observed ; they were 80 eX: 
tremely small sng covering a surface not ‘03 of an inch in 
the attempt was made it was found that oli gave perfectly 
distinct though faint reflections. 
Taste IV.* 
C = 7-1(010). 7? = 243, P=201. 
Meas. Cale. Meas. Cale. Meas. (Cale. 
| 2% 021 |/17° 377/17° 38}1123° 58’; 23° 497 
12 
+a) 7-8 SisT 22-9 Pal SS 8) 4 | BL 19°) 8 21" 7 8 BF 
2 
6 
+a? |—"13/2°26°9 [112 55112 58 129 32/29 27 |) 6 36| 6 35 
9 
26 
+23 “q 13/2°26-7 10 34/10 301/30 37 |30 42 |) 8 50] 8 54 
34 17 
+24 ray telat 9 42; 9 39/33 41/33 41 1/12 O/}11 53 
b iy ea ANd 
—a wy 24 L2414 20 21 |20 28 |/21 11/21 6)||3 25] 3 24 
5-13-12 34 32/34 2% {1% 321) 7 #15 |l21 16/21 8 
o| 
“131-137 |18 60 }19 17 |119 40/19 47 |} 4 5] 4 38 
6-24-13 |/22 24122 31 112 16/11 59 ||12 22112 22 
mits ol S 
2156 {16 5/|16 47/18 51/19 7117 39} 7 34 
I | 
% 8, 
3/5 slo SI® =|5 le 
te 
4-13°7 ||24 22/23 5691/9 26) 9 47/115 25/15 3 
25 25|_ 
—¥ ip 7 t2h9 {18 54/19 2 [4 45 [14 38 |/14 40 | 14 52 
ap 
—y'| 3/9248 [21 65/22 4/13 18/13 14/119 32/19 29 
“oe | 
—y'| 95} 21 | gi 13 |/23 31 }23 14 
BIA ees 
yP 24-9241 [118 4519 5 |/25 3425 27 
The paper rt saat all taken with the greatest care; and 
after the calculations had been made, they were repea ; and 
ere in the Memoir. 
