BETWEEN THE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 581 
Formula, 17 = C/(l yt^^) —continued. 
d- 
1 
i 
1 7 . 
1 
' t. 
1 
1 I) X 10= 
(Calc.). 
!) X 10= 
(Obs.). 
Ditfei^encc 
X 10-h 
Methyl sulphide . . . 
•00997 
•0^1584 
1 
1 
30 
269 
269 
0 
Ethyl sulphide .... 
•01219 
•0^3340 
90 
236 
237 
1 
1 
Carbon bisulphide 
■00820 
•0^1302 
j 40 
318 
319 
1 i 
Dimethyl ketone . 
•010G4 
■0^3115 
I 50 
245 
245 
1 
1 
0 
Methyl ethyl ketone . 
•01284 
■0,3639 
1 80 
238 
239 
1 
Methyl propyl ketone 
•01325 
•0,3965 
1 100 
238 
238 
0 
Diethyl ketone.... 
•01270 
•0,3734 
. 100 
225 
226 
1 
Acetaldehyde .... 
•00963 
•0,2953 
20 
222 
222 
0 
Formic acid. 
•02870 
•O. 5 I 6953 
100 
526 
542 
16 
Acetic acid. 
•01826 
•0,8537 
no 
417 
417 
0 
Propionic acid .... 
•01720 
■0,6941 
140 
319 
322 
3 
Butyric acid .... 
•02109 
•O 3 IIO 73 j 
160 
315 
314 
-1 
Isobutyric acid 
•01917 
•0,9215 
150 
317 
317 
0 
Acetic anhydride . 
•01735 
•0,6122 
140 
268 
275 
7 
Propionic anhydride . 
•02005 
•0,8315 
160 
254 
264 
10 
Ethyl ether . 
•01074 
1 
•0,1828 i 
! 
30 
214 
212 
0 
Thiophen. 
•01518 
•0,4358 I 
80 
349 
350 
i 
1 
Benzene . 
•01861 
•0,6181 
80 
314 
317 
3 
Toluene. 
■01462 
•0,4220 
no 
246 
250 
4 
Ethyl benzene .... 
•01448 
•0,4530 
130 
240 
244 
4 
Ortho-xylene .... 
•01701 
•0,5636 
140 
249 
254 
5 
Meta-xylene .... 
•01418 
•0,3923 
130 
229 
233 
4 
Para-xylene .... 
•01472 
■ 0,45 78 
130 
229 
233 
4 
Bromine. 
•01258 
•0,2290 i 
50 
743 
' 746 
3 
Niti’ogen peroxide . 
•01231 
•0,3212 
20 
418 
418 
0 
Agreement of Observed and Calculated Values. 
The differences given in the talDle show that in the great majority of cases the 
agreement is very close. Indeed it clearly points to the conclusion that an expression 
of the type 
