BETWEEN THE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 473 
Left limb. 
Rigbfc limb. 
Temp. 
Press. 
Corv. 
>]■ 
Temp. 
Press. 
Corr. 
V- 
O 
0-34 
102-38 
-000086 
-004755 
O 
0-34 
102-22 
-000086 
•004764 
5-21 
101-46 
-000089 ■ 
-004517 
5-16 
101-31 
•000089 
•004533 
9-68 
101-39 
-000092 
•004320 
9-66 
101-30 
•000092 
•004334 
15-47 
101-37 
-000097 
•004085 
15-45 
101-21 
•000097 
•004090 
20-54 
101-35 
-000100 
•003900 
20-54 
101 21 
•000100 
•003906 
25-30 
101-31 
-000104 
•003728 
25-26 
101-17 
•000104 
•003740 
30-07 
101-33 
•000108 
•003577 
30-00 
101-17 
•000107 
•003585 
36-20 
101-35 
-000112 
•003391 
36-09 
101-20 
•000112 
•003397 
In reducing the observations the value d(0°^'0°) = 1'4733 for the relative density, 
and the expression 
V = 1 + •0ol3376« + -0515013^3 + •0-169/:3 
for the thermal expansion (Pierre, ‘ Annales de Chim. et de Phys.,’ 3, vol. 15, 309), 
have been adopted. 
Taking 
rjy = ’004759 7^3 = '003394 (calculated) = '004019 
— 0°'34 to — 36°'15 ^2 (h’om curve) = 17“'22, 
we obtain the formula 
6-8898 
“ (138-65 + ’ 
which almost exactly reproduces the observed values. 
^lean temp. 
V- 
Difference. 
Observed (mean). 
Calculated. 
O 
0-.34 
•004759 
•004759 
•000000 
5-18 
•004525 
•004525 
•000000 
9-67 
•004327 
•004324 
- -000003 
15-46 
•004087 
•004087 
•000000 
20-54 
•003903 
•003896 
- -000007 
25-28 
•003734 
•003731 
- -000003 
30-03 
•003581 
•003577 
- -000004 
36-15 
•003394 
•003394 
•000000 
3 r 
MDCCCXCIY.—A. 
