ON OPTICAL ROTATORY DISPERSION. 
291 
Table III.—Rotatory Dispersion of Tartaric Acid in Aqueous Solutions at 20° G. 
(a) 54-1 gr. tartaric acid in 100 gr. solution, 
or 69*9 gr. „ ,, inlQOc.c. 
Density = I • 2920. Length of tube = 6 dm. 
TM1 = 17•188 _ 12-080 
L lJ X 2 — 0-030 X 2 — 0-074' 
X. 
a obs. 
[M] obs. 
[MJ. 
[M]—[MJ. 
Li 6708 
+24-35 
8-71 
8-80 
-0-09 
Cd 6438 
25-55 
9-14 
9-22 
-0-08 
Na 5893 
27-78 
9-94 
9-97 
-0-03 
Cu 5782 
28-52 
10-20 
10-07 
+0-13 
Hg5780 
28-12 
10-08 
10-08 
zfc 
Cu 5700 
28-67 
10-25 
10-14 
+0-11 
Hg5461 
28-53 
10-20 
10-20 
± ' 
Cu 5219 
27-75 
9-93 
10-02 
-0-09 
Ag 5209 
27-41 
9-80 
10-00 
-0-20 
Cu 5154 
27-51 
9-82 
9-90 
-0-08 
Cu 5105 
27-18 
9-72 
9-80 
—0-08 
Cd 5086 
26-97 
9-64 
9-75 
-0-11 
Zn 4811 
23-54 
8-42 
8-60 
-0-18 
Cd 4800 
23-30 
8-33 
8-53 
-0-20 
Zn 4722 
21-91 
7-84 
7-98 
-0-14 
Zn 4680 
- 20-73 
7-41 
7-63 
-0-22 
Cd 4678 
20-69 
7-40 
7-61 
-0-21 
Fe 4580 
— 
-. 
— 
— 
Fe 4440 
— 
— 
— 
— 
Hg 4358 
9-13 
3-26 
3-26 
± 
Fe 4228 
0 
0 
+ 0-2 
-0-2 
Fe 4275 
— 
— 
-- 
— 
Fe 4209 
— 
— 
— 
— 
Fe 4146 
— 
— 
— 
— 
Fe 4110 
-10 
-3-6 
—3-5 
-0-1 
Fe 4096 
— 
— 
— 
— 
Fe 4046 
— 
— 
— 
— 
Fe 4023 
— 
— 
— 
— 
Fe 4005 
-20 
1 * 
-8-0 
+ 0-9 
Fe 4000 
— 
— 
— 
— 
Fe 3967 
— 
— 
— 
— 
Fe 3941 
_ 
— 
— 
(6) 4.1-3 
or 50-1 
Le 
[MJ = 
4 gr. tartaric acid in 100 gr. 
solution, 
5 gr. ,, ,, in 100 c.c. 
Density = 1-2132. 
ngth of tube = 6 dm. 
17-960 11-869 
X 2 — 0 -030 X 2 — 0 -074 ’ 
a obs. 
[M] obs. 
[Mi]. 
[M]—[Mi]. 
+22-40 
11-17 
11-20 
-0-03 
23-51 
11-71 
11-85 
-0-14 
26-43 
13-18 
13-18 
± 
26-94 
13-43 
13-43 
4_ 
nz 
26-94 
13-43 
13-43 
± 
27-32 
13-62 
13-60 
+0-02 
28-14 
14-03 
14-03 
± 
28-55 
14-24 
14-27 
-0-03 
28-61 
14-26 
14-28 
-0-02 
28-62 
14-26 
14-27 
-0-01 
28-78 
14-34 
14-27 
+0-07 
27-41 
13-67 
13-74 
-0-07 
26-51 
13-22 
13-17 
+0-05 
25 
12-5 
12-5 
± 
'22 
11-0 
11-1 
- 0-1 
19-9 
9-92 
9-92 
i 
17 
8-5 
8-5 
14 
7-0 
7-0 
± 
11 
5-5 
5-5 
± 
8 
4-0 
3-8 
+ 0-2 
5 
2-5 
2-0 
+. 0-5 
3 
1-5 
1-1 
+ 0-4 
2 
1-0 
+ 0-4 
+ 0-6 
+J- 
+ 0-5 
- 0-1 
+ 0-6 
-1 
- 0-5 
- 1-3 
+ 0-8 
-4 
- 2-0 
- 2-6 
+ 0-6 
•) 
s 
9 
