30 Proceedings of the Royal Society of Edinburgh. [Sess. 
Experimental Data. 
Ethyl d-Tartrate in Cinnamic Aldehyde. 
Densities : — 
p — 9 -644. 
t . 
0° 15° * 
17-9° 37*5° * 
59-7° 
62° * 
100°* 
144° 
d . 
. 1-0808 1*0685 
1-0662 1-0507 
* Experimental. 
1-0327 
1-0308 
0-9997 
0-8637 
Length of tube used, 50 mm. 
t. 
a (100 mm.). 
[“]• 
[M], 
r v A = 6716-3. 
0° 
+ 6-704 
+ 64°'31 
+ 132°-5 
17-9 
5-488 
53-37 
109-9 
59-7 
3696 
37-11 
76-4 
100 
2-816 
2921 
60-1 
144 
2-336 
25-13 
51-7 
r 2 , A = 6234*3 . 
0 
+ 8-008 
+ 76-75 
+ 158-1 
17-9 
6-474 
62-06 
129-7 
'59-7 
4-392 
44-10 
90-8 
100 
3-270 
33 91 
69-9 
144 
2-596 
27-93 
57-5 
y, A = 5790-3 . 
0 
+ 9-494 
+ 91-08 
+ 186-6 
17-9 
7-690 
74-88 
154-1 
59-7 
5-178 
51-99 
107-1 
100 
3-726 
38-64 
79-6 
144 
2-964 
31-95 
65-8 
g, A = 5460-7 . 
0 
+ 10-990 
+ 105-43 
+ 217-2 
17-9 
9-040 
87-91 
181-1 
59-7 
5-814 
58-38 
120-3 
100 
4-314 
44-74 
92-2 
144 
3-242 
34-88 
71-7 
b , a = 4959'7 . 
0 
+ 15-300 
+ 146-79 
+ 302-4 
17-9 
12-040 
117-09 
241-2 
59-7 
7-674 
77-05 
158-7 
100 
5-390 
55-90 
115-1 
144 
4-148 
44-63 
91-9 
v, a = 4358*3 . 
0 
+ 21-688 
+ 208-1 
+ 428-6 
17-9 
15*538 
151-1 
311-3 
Unreadable at higher temperatures. 
