ON OPTICAL ROTATORY DISPERSION. 
307 
Table XIX. — Rotatory Dispersion of Potassium Bismuthyl Tartrate in presence of 
excess of Alkali at 20° C. 
2-5 gr. (- 6 l 0 - mol.) tartaric acid +2-16 gr. mol.) of Bi(OH) 3 +14 gr. (£ mol.) KOPI 
in 100 c.c. of solution. 
Length of tube = 6 dm. 
Simple Formula. 
-37‘414 
X 2 -0-0645' 
A. 
CL. 
[M] obs. 
[MJ calc. 
[M]—[MJ. 
[Mj (A 2 -0-0645). 
Cd 6438 
-10-64 
-106-4 
-106-9 
+0-5 
-37-24 
Zn 6364 
-10-93 
-109-3 
-109-9 
+0-6 
-37-22 
Na 5893 
-13-22 
-132-2 
-132-2 
± 
-37-38 
Hg 5790 
-13-78 
-137-8 
-138-2 
+0-4 
-37-31 
Cu 5782 
-13-90 
-139-0 
-138-7 
-0-3 
-37-50 
Hg 5769 
-13-98 
-139-8 
-139-4 
-0-4 
-37-51 
Cu 5700 
-14-39 
-143-9 
-143-7 
-0-2 
-37-47 
Hg 5461 
-15-99 
-159-9 
-160-1 
+0-2 
-37-37 
Cu 5219 
-18-04 
-180-4 
-180-2 
-0-2 
-37-50 
Cu 5154 
— 18-60 
-186-0 
-186-1 
+0-1 
-37-41 
Cu 5105 
-19-01 
-190-1 
-190-8 
+0-7 
-37-28 
Cd 5086 
-19-26 
-192-6 
-192-6 
± 
-37-40 
Zn 4811 
-22-23 
-222-3 
-224-0 
+1-7 
-37-12 
Cd 4800 
-22-55 
-225-5 
-225-5 
zb 
-37-35 
Zn 4722 
-23-28 
-232-8 
-236-1 
+3-3 
-36-89 
Cd 4678 
-24-34 
-243-4 
-242-5 
-0-9 
-37-57 
Hg 4358 
-29-89 
-298-9 
-298-4 
-0-5 
-37-49 
Fe 4326 
-30 
-300 
-305 
+5 
-36-79 
Fe 4271 
-31 
-310 
-317 
+7 
-36-55 
Fe 4251 
-32 
-320 
-322 
+2 
-37-19 
Fe 4249 
-33 
-330 
-322 
-8 
-38-28 
