BETWEEN’ THE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 485 
Mean temp. 
V- 
Difference. 
Observed (mean). 
Calculated. 
O 
0-45 
-004327 
•004327 
•000000 
5-24 
-004104 
-004108 
+ -000004 
lO-OG 
-003894 
•003902 
+ -000008 
14-65 
•003709 
•003720 
+ -000011 
20-71 
•003495 
•003498 
+ -000003 
25-76 
•003344 
•003327 
- -000017 
30-38 
•003178 
•003181 
+ -000003 
35-38 
•003038 
•003034 
- -000004 
40-82 
•002887 
•002884 
- -000003 
44-68 
•002784 
•002784 
•000000 
Isoi^mpyl Chloride. (CH3).^CHC1. 
A sample from Kahlbaum, after drying over phosphoric oxide, was distilled. It 
boiled between 35°'80 and 35°‘86. Bar. 762’1 millims. Corrected and reduced 
b.p. = 35°'74. 
Vapour density : 
Found, 38‘92. Calculated, 39'18. 
The observations for viscosity gave ;— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
Temp. 
Press. 
Corr. 
'/• 
O 
0-27 
100-38 
•000060 
•003996 
O 
0-27 
100-32 
•000060 
•004003 
6-68 
100-35 
•000064 
-003712 
6-69 
100-25 
•000064 
•003716 
1102 
100-34 
•000067 
•003540 
11-02 
100-25 
•000067 
•003540 
16-46 
100-33 
•000070 
•003341 
16-48 
100-25 
000070 
•003341 
22-53 
100-31 
•000074 
•003L33 
22-47 
100-22 
•000074 
•003143 
28-22 
100-32 
•000077 
•002960 
28-22 
100-21 
•000077 
•002964 
33-05 
100-31 
•000080 
•002827 
33-00 
100-23 
•000080 
•002832 
In reducing the observations, the value d (0°/0°) = U‘8825 for the relative density, 
and the expression 
V = 1 + *0313696^ + -0555287^2 
for the thermal expansion (Zander, ‘ Annalen,’ 214, 158), were employed. 
Taking 
= '004000 7^3 — '002829 (calculated) = '003364 
h = 0'°27 
^3 = 33°'02 
^2 (from curve) = 15°'75, 
