466 
MESSRS. T. E. THORPE AND J. W. RODGER ON THE RELATIONS 
Ethyl Iodide. CHg.CH^I. 
A quaDtity of ethyl iodide, made for us by Mr. A. Greeves, was dried over 
calcium chloride, and finally over phosphoric oxide. On distilling, it boiled between 
72°'38 and 72°’44, Bar. 756‘2 milliins. Correct.ed and reduced b.p. = 72°'57. 
The sample was quite colourless and remained so throughout the observations. 
Vapour density : 
Found, 77'39. Calculated, 77'77. 
Observations of viscosity : 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
Temp. 
Press. 
Corr. 
V- 
O 
0-27 
101-53 
-000079 
•007164 
C 
0-30 
101-31 
•000079 
•007171 
7-70 
101-63 
-000085 
-006601 
7.70 
101-40 
•000085 
•006610 1 
13T9 
101-69 
-000089 
-006231 
13-18 
101-46 
•000089 
•006240 i 
20-83 
101-84 
-000096 
-005778 
20-77 
101-60 
•000096 
•005787 : 
26-08 
101 85 
-000100 
005494 
26-10 
101-64 
•000100 
•005499 i 
82-96 
101-89 
-000105 
-005150 
32-99 
101 64 
•000105 
-005153 
38-74 
101-92 
-000110 
•004888 
38-74 
101-74 
•000110 
•004896 
45-27 
101-24 
-000114 
•004619 
45-22 
101-08 
•000114 
•004623 : 
61-39 
101-08 
-000119 
•004383 
51-40 
100-94 
•000119 
•004390 i 
57-51 
101-07 
-000124 
•004168 
57-51 
100-88 
•000124 
•004166 1 
63-76 
100-98 
-000129 
•003963 
63-69 
100-82 
•000129 
•003969 : 
69-35 
100-93 
-000134 
•003790 
69-42 
100-75 
•000134 
•003794 j 
In reducing the observations we have used the value c^(0°/0°) = 1'9795 for the 
relative density, and the expression 
V = 1 + -001520^ + •0(.26032e~ + 
for tlie thermal expansion (Doeihner, Ioc. cit.). 
Taking 
= -007167 
7^3 = -003792 
Tj., (calculated) = •005213 
q = 0°-28 
q = 69°-38 
q (from curve) = 31°’70, 
we obtain 
50-810 
~ (157-42 + ty 
7520 ’ 
which gives results in good agreement with the observed values. 
