BETWEEN TETE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 499 
21-768 
~ (170-34 + ’ 
which gives results in excellent agreement with those obtained by observation. 
Mean temp. 
'}■ 
Difference. 
Observed (mean). 
Calculated. 
0 
0-27 
-003529 
-003529 
-000000 
5-56 
-003351 
-003351 
-000000 
10-05 
-003209 
-003210 
+ -000001 
14-75 
-003075 
-003073 
- -000002 
20-19 
-002927 
-002926 
- -000001 
26-14 
-002776 
-002777 
+ -000001 
31-35 
-002655 
-002656 
+ -000001 
35-81 
-002559 
-C02559 
-000000 
Ethyl SuljMde. (CH 3 .CH 3 ) 2 S. 
About 200 grams of ethyl sulphide were dried over phosphoric oxide and distilled, 
By far the greater portion boiled between 91“-23 and 91°‘53, Bar. 743‘7 millims 
Corrected and reduced b.p. = 92°-l, 
Vapour density : 
Found, 44 - 73 . Calculated, 45*0. 
The observations for viscosity gave :— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
'/• 
Temp. 
Press. 
Corr. 
0 
0-19 
101-99 
-000044 
•005570 
0 
0-23 
101-92 
•000044 
•005580 
8-34 
101-98 
-000047 
•005056 
8-30 
101-90 
■000047 
•00.5062 
15-84 
101-97 
-000051 
•004644 
15-87 
101-89 
•000051 
•004646 
24-65 
101-91 
-000055 
•004234 
24-63 
101-85 
•000055 
•004240 
.3-2-64 
101-84 
-000059 
•003897 
32-63 
101-78 
•000059 
-003900 
40-25 
101-81 
-000063 
•003625 
40-13 
101-73 
•000062 
•003631 
47-74 
101-49 
-000066 
•003381 
47-76 
101-43 
000066 
■00,3381 
56-51 
101-47 
-000070 
•003122 
56-47 
101-39 
•000070 
•003129 
63-54 
101-46 
•000074 
•002943 
63-40 
101-38 
•000074 
•002951 
71-21 
101-47 
•000078 
•002762 
71-30 
101-.39 
•000078 
•002761 
80-28 
101-48 
•000082 
•002563 
80-35 
101-39 
•000082 
•002562 
87-95 
101-49 
•000086 
■002405 
88-04 
101-44 
•000086 
•002407 
In reducing the observations we have adopted Pierre’s value cZ (0°/0°) — 0'83672 
for the relative density, and Ids expression 
3 s 2 
