BETWEEN" THE VISCOSITY OF LIQUIDS AND THEIR CHEMICAL NATURE. 541 
Mean temp. 
Difference. 
Observed (mean). 
Calculated. 
O 
22-41 
-058876 
-058876 
-000000 
32-08 
-030047 
-030045 
--000002 
37-22 
•023676 
-023298 
--000378 
42-41 
-019094 
-018788 
--000306 
47-82 
-015501 
-015501 
-000000 
52-99 
-012961 
-012961 
-000000 
' 57-94 
-010976 
-010992 
+-000016 
62-09 
-009678 
-009667 
-•000011 
68-35 
-008102 
-008079 
-•000023 
73-47 
-007057 
-007053 
-•000004 
77-05 
-006447 
-006447 
•000000 
Amyl Alcohol (optically active). CH3.CH2.CH(CH3).CH20H. 
We are indebted to Mr, J. E. Marsh, Oxford, for the specimen of optically active 
amyl alcohol which has served for our observations. Its rotatory power for sodium 
light was — 7° 34' for 20 centims. at 10°, It was placed over fused potassium 
carbonate for 18 days, and after decantation from the carbonate was distilled. It 
boiled between 127°’25 and 129°'25, Bar. 751'8 millims. Corrected and reduced 
b.p. = 128°-7. 
Yapour density :— 
Found, 43'46. Calculated, 44'00, 
The observations for viscosity gave ;— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
n- 
Temp. 
Press. 
Corr. 
V- 
o 
O 
0-40 
130-35 
•000003 
•109672 
11-63 
130*45 
•000004 
•069581 
23-30 
130-30 
•000007 
•045372 
34-75 
129-85 
•000010 
•030788 
47-40 
129-73 
•000014 
•020880 
56-94 
129-82 
•000018 
•015956 
67-52 
129-76 
•000024 
•012183 
79-25 
129-95 
•000031 
•009254 
91-88 
1-29-87 
•000031 
•007075 
100-03 
130-09 
•000046 
006033 
112-79 
180-13 
•000056 
■004814 
112-78 
lSO-02 
•000056 
•004824 
124-40 
130-16 
•000066 
•004003 
1-24-32 
130-07 
•000066 
•004013 
