BETWEEN THE VISCOSITY OP LIQUIDS AND THEIR CHEMICAL NATURE. 547 
Allyl Alcohol CHaiCH.CHaOH. 
A portion of a sample received from Dr. Perkin. It was carefully dehydrated by 
lime. On distillation it boiled between 95°'74 and 96°’64, n = 51°, t = 30° (emergent 
column). Bar. 764’6 millims. Corrected and reduced b.p. = 96°‘4. This number 
agrees closely with that previously found for this substance by one of ns, viz., 96°‘6 
(Thorpe, ‘ Chem. Soc. Trans.,’ 1880, 210). 
Vapour density ; 
Found, 28'41. Calculated, 29'00. 
Observations for viscosity :— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
Temp. 
Press. 
Corr. 
'/• 
0 
7-49 
128-22 
-000017 
-018065 
0 
7-34 
128-14 
-000017 
-018139 
15-31 
128-22 
-000020 
-015079 
15-31 
128-12 
-000020 
-015084 
22-76 
128-25 
-000023 
-012842 
22-86 
128-16 
-000023 
-012819 
30-49 
128-14 
-000027 
-010959 
30-51 
128-08 
-000027 
-010953 
38-04 
128-22 
-000031 
-009463 
38-06 
1-28-12 
-000031 
-009456 
46-41 
1-28-00 
-000036 
-008096 
46-31 
127-93 
-000036 
-008126 
54-14 
128-37 
-000041 
-007067 
54-06 
128-37 
-000041 
•007096 
60-71 
128-06 
-000045 
-006337 
60-84 
128-06 
-000045 
•006329 
68-84 
128-66 
-000051 
-005565 
68-89 
128-67 
-000051 
•005582 
76-79 
128-30 
-000057 
-004922 
76-84 
128-25 
-000057 
•004927 
84-54 
128-22 
-000063 
-004388 
84-46 
128-14 
-000063 
•004402 
92-14 
1-28-12 
-000069 
-003945 
92-39 
128-05 
-000069 
•003936 
95-24 
127-99 
-000072 
•003792 
The observations have been reduced by means of the value cZ(0°/4°) = 0'8699 and 
the expression 
V = 1 + - 0399371 ^ + •0659986U® + - 0712285^3 
(Thorpe, loc. cit.). 
Taking 
7)1 = '018102 7^3 = '003941 (calculated) = '008446, 
h = 7°'41 ^3 = 92°'26 ^3 (from curve) = 44°'08, 
we obtain the formula 
10748-4 
~ (109-42 + 02-7925 > 
which gives numbers in good agreement with the observed values. 
4 A 2 
