32 Proceedings of the Royal Society of Edinburgh. [Sess. 
Densities : — 
i . 0 ° 
d . 1-4800 
Iso butyl Dibenzoyl-d-tartrate (M = 470). 
17*1°* 17-7° 55-40° 55-5°* 73° * 100°* 181° 182° 183° 193° 
1-3360 1-1330 1-0990 1-0992 T0867 1*0644 1*6050 1*0065 0'0075 0*9888 
* Experimental. 
Length of tube used, 30 mm. 
t. 
a (100 mm.). 
[«]. 
! 
[M]. 
o 
o 
o 
*1 • 
0 
- 34-55 
-30-10 
- 141*4 
17-7 
36-07 
31-83 
149*6 
100 
34-84 
32-81 
154-2 
181 
27-58 
27*44 
129-0 
r 2 • • 
0 
-42-83 
- 37 37 
-175-3 
17*7 
44-26 
39-07 
183-6 
55-4 
45-29 
41-10 
193-2 
100 
42-89 
39-82 
187-2 
181 
33-55 
33-38 
156-9 
y 
0 
-53-12 
- 46-27 
-217-5 
22-5 
55-04 
48-80 
229-3 
55-4 
55-02 
5006 
235-3 
100 
51-77 
48-75 
229-1 
183 
4043 
40-12 
188-6 
g 
0 
- 63-92 
-55-68 
-261-7 
22-5 
65-77 
58-31 
274-0 
55-4 
65-49 
59-58 
280-0 
' 100 
61-27 
57-69 
271-2 
182 
47-82 
47-54 
2234 
b 
0 
-89-92 
- 78-32 
-368-1 
17-7 
91-80 
81-02 
380-8 
55-4 
91-07 
82-83 
389-4 
100 
84-36 
79-44 
373-3 
181 
66-48 
66-16 
310-9 
V 
0 
-139-54 
-121-56 
-571-4 
22-5 
140-70 
124-72 
586-2 
55-4 
137-66 
125-24 
588-6 
100 
126-30 
118-93 
559-0 
181 
99-07 
98-58 
463*3 
