16 
DE. A. E. H. TUTTON ON THE 
Comparison of the Inter facial Angles. 
Angle. 
IvCo si 
ilphate. 
EbCo sulphate. 
CsCo sulphate. 
AmCo sulphate. 
' ac 
(100):(001) 
o 
75 
5 
o 
73 
/ 
59 
° I 
72 52 
o 
72 
58 
as 
= 
(100):(101) 
45 
53 
45 
11 
44 20 
44 
43 
sc, 
= 
(101): (001) 
29 
12 
28 
48 
28 32 
28 
15 
cr' 
= 
(001):(201) 
63 
38 
64 
24 
65 24 
64 
46 
cs' 
= 
(001):(101) 
38 
29 
38 
47 
39 15 
38 
41 
s'r' 
= 
(101):(201) 
25 
9 
25 
37 
26 9 
26 
5 . 
r'a 
= 
(201):(100) 
41 
17 
41 
37 
41 44 
42 
16 
C ap 
= 
(100):(110) 
35 
37 
35 
21 
34 48 
35 
14 
> 
VP 
= 
(110):(120) 
19 
28 
19 
28 
19 28 
19 
28 
s 
P'b 
= 
(120):(010) 
34 
55 
35 
11 
35 44 
35 
18 
Ipb 
= 
(110):(010) 
54 
23 
54 
39 
55 12 
54 
46 
f cq 
= 
(001):(Oil) 
25 
55 
25 
43 
25 24 
25 
26 
Iqb 
= 
(Oil):(010) 
64 
5 
64 
17 
64 36 
64 
34 
' ao 
= 
(100): (111) 
49 
6 
48 
23 
47 30 
47 
52 
oq 
= 
(111): (Oil) 
27 
31 
27 
13 
27 4 
26 
47 
i n 
1 20' 
= 
(100):(Oil) 
76 
37 
75 
36 
74 34 
74 
39 
= 
(Oil):(111) 
34 
41 
34 
59 
35 26 
34 
57 
[ da 
= 
(111): (100) 
68 
42 
69 
25 
70 0 
70 
24 
f CO 
= 
(001):(111) 
34 
50 
34 
20 
33 54 
33 
45 
op 
= 
(111):(110) 
43 
5 
42 
40 
42 6 
42 
24 
I cp 
= 
(001):(110) 
77 
55 
77 
0 
76 0 
76 
9 
po' 
= 
(110):(111) 
57 
22 
58 
3 
58 42 
58 
56 
[ o'c 
= 
(111):(001) 
44 
43 
44 
57 
45 18 
44 
55 
J 
'bo 
= 
(010):(111) 
70 
7 
70 
26 
70 52 
70 
43 
1 
os 
= 
(111): (101) 
19 
53 
19 
34 
19 8 
19 
17 
J 
'bo' 
= 
(010):(Ill) 
65 
13 
65 
12 
65 17 
65 
11 
1 
.o's' 
= 
(111): (101) 
24 
47 
24 
48 
24 43 
24 
49 
'sq 
= 
(101):(Oil) 
38 
16 
37 
51 
37 29 
37 
18 
IV 
= 
(Oil):(110) 
86 
12 
87 
14 
88 29 
88 
11 
JJS 
= 
(110):(101) 
55 
32 
54 
55 
54 2 
54 
31 
'sq 
= 
(101):(Oil) 
45 
15 
45 
23 
45 37 
45 
11 
ip 
= 
(Oil):(110) 
63 
43 
63 
0 
62 24 
62 
21 
. V s ' 
= 
(110):(101) 
71 
2 
71 
37 
71 59 
72 
28 
r'o 
= 
(201):(Ill) 
34 
44 
35 
4 
35 22 
35 
23 
\ 
dp 
= 
(111): (110) 
92 
55 
92 
30 
92 25 
91 
48 
1 
.pr’ 
== 
(110):(201) 
52 
21 
52 
26 
52 13 
52 
49 
Eeplaeement. 
Average change. 
Maximum change. 
Iv by Eb. 
27 
66 = 1 6 
K bv Os. 
56 
137 = 2 17 
K by NH 4 . 
52 
127 = 2 7 
