ON OPTICAL ROTATORY DISPERSION. 
303 
Table XV.-—Rotatory Dispersion of Potassium and Sodium Tartrates at 20° C. in 
presence of Alkali. 
02 molt 
P 
O 
(h) 4- 
6 gr. 
(0- 
02 mol.) NaJLC.O 
; .2H. 
0 
(a) 4-: 
gr 
(0- 
K.,H 
4ITO in 
100 c.c. i 
in 100 c. 
c. 
Length of tube 
= 6 
dm. 
Length of tube 
— 6 dm. 
Simple Formula 
Simple Formula. 
[MJ = 
17-298 
A 2 —0'013' 
[MJ = f 
•56 
-o' 
A. 
a. 
[M] obs. 
[Md 
sale. 
[M]— [MR 
[M] A 2 . 
a. 
[M] obs. 
[M 1 ] calc. 
[M]—[MR. 
[M] 
A 2 . 
Cd 
6438 
+5 
13 
42-7 
43 
1 
-0-4 
17-72 
1 
+5 
23 
43 
6 
44-8 
— 1-2 
18 
08 
Hg 
5780 
6 
47 
53-9 
53 
9 
± 
18-01 
6 
66 
55 
5 
55-5 
± 
18 
54 
Cu 
5782 
6 
46 
53-8 
53 
8 
± 
18-00 
6 
65 
55 
4 
55-5 
-0-1 
18 
52 
Cu 
5700 
6 
55 
54-6 
55 
4 
-0-8 
17-74 
6 
76 
56 
3 
57-1 
-0-8 
18 
29 
Hg 
5461 
7 
37 
61-4 
60 
7 
+0-7 
18-31 
7 
49 
62 
4 
62-2 
+0-2 
18 
61 
Cu 
5219 
8 
12 
67-7 
66 
7 
+ 1-0 
18-43 
8 
25 
68 
7 
68-2 
+0-5 
18 
70 
Cu 
5154 
8 
23 
68-6 
68 
5 
+0-1 
18-21 
8 
40 
70 
0 
69-9 
+0-1 
18 
59 
Cu 
5105 
8 
34 
69-5 
69 
9 
-0-4 
18-11 
8 
51 
70 
9 
71-2 
-0-3 
18 
48 
Cd 
5086 
8 
50 
70-8 
70 
4 
+0-4 
18-32 
8 
61 
71 
7 
71-7 
± 
18 
56 
Zn 
4811 
9 
60 
80-0 
79 
2 
+0-8 
18-52 
9 
65 
80 
4 
80-2 
+0-2 
18 
61 
Cd 
4800 
9 
53 
79-4 
79 
6 
-0-2 
18-29 
9 
66 
80 
5 
80-6 
-0-1 
18 
55 
Zn 
4722 
9 
84 
82-0 
82 
4 
-0-4 
18-29 
10 
05 
83 
7 
83-2 
+0-5 
18 
68 
Cd 
4678 
10 
08 
84-0 
84 
0 
± 
18-38 
10 
08 
84 
0 
84-8 
-0-8 
18 
38 
Hg 
4358 
11 
68 
97-3 
97 
8 
-0-5 
18-48 
11 
85 
98 
7 
97-7 
+1-0 
18 
75 
Fe 
4242 
1 
— 
13 
108 
103 
+5 
19 
5 
