298 
MESSES. THOMAS MARTIN LOWRY AND PERCY COELETT AUSTIN 
Table VIII. — Rotatory Dispersion of Rochelle Salt in Aqueous Solution at 20° C. 
44-63 gr. NaKH 4 C 4 0 6 -4H 2 0 in 100 gr. aqueous solution, 
or 55-93 gr. ,, in 100 c.c. 
Density = 1-2533. Length of tube — 6 dm. 
Simple Formula. 
Complex Formula, 
21T50 
A 2 —0'0051 
[MJ 
38'513 _ 18'066 
A 2 —0'038 A 2 —O'OO' 
A. 
a. 
[M] obs. 
[M] A 2 . 
[MJ. 
,[M]—[M x ]. 
[Mo]. 
[M]-[M 2 ], 
Cd 6438 
61-27 
51-49 
21-34 
51-67 
-0-18 
51-33 
+0-16 
Na 5893 
73-46 
61-72 
21-43 
61-82 
-0-10 
61-64 
+0-08 
j Hg 5790 
76-31 
64-12 
21-49 
64-07 
+0-05 
63-93 
+0-19 
Cu 5782 
76-42 
64-21 
21-47 
64-25 
-0-04 
64-11 
+0-10 
Hg 5769 
76-71 
64-45 
21-45 
64-55 
-0-10 
64-42 
+0-03 
i Cu 5700 
78-76 
66-18 
21-50 
66-14 
+0-04 
66-04 
+0-14 
Hg 5461 
85-88 
72-16 
21-52 
72-16 
± 
72-16 
f 
Cu 5219 
94-52 
79-42 
21-63 
79-14 
+0-28 
79-25 
+0-17 
Cu 5154 
97-19 
81-66 
21-69 
81-18 
+0-48 
81-32 
+0-34 
Cu 5105 
99-02 
83-20 
21-68 
82-78 
+0-42 
82-95 
+0-25 
Cd 5086 
99-63 
83-72 
21-65 
83-42 
+0-30 
83-59 
+0-13 
Zn 4811 
111-47 
93-66 
21-68 
93-44 
+0-22 
93-70 
-0-04 
Cd 4800 
112-36 
94-41 
21-75 
93-89 
+0-52 
94-15 
+0-26 
Zn 4722 
116-07 
97-53 
21-74 
97-09 
+0-44 
97-34 
+0-19 
Zn 4680 
118-07 
99-21 
21-73 
98-88 
+0-33 
99-15 
+0-06 
Cd 4678 
118-35 
99-44 
21-76 
98-96 
+0-48 
99-72 
-0-28 
Hg 4358 
136-20 
114-45 
21-73 
114-45 
-1- 
114-45 
1 Fe 4286 
140 
117-6 
21-61 
118-4 
-0-8 
118-3 
-0-7 
Fe 4271 
142 
119-3 
21-76 
119-3 
± 
119-1 
+0-2 
Fe 4135 
152 
127-7 
21-84 
127-5 
+0-2 
126-8 
+0-9 
l Fe 4055 
155 
130-3 
21-42 
132-8 
-2-5 
131-6 
—1-3 
