476 MESSRS. T. E. THORPE AND J. W. RODGER ON THE RELATIONS 
Taking 
y)i — '006021 173 = '003371 770 (calculated) = '004505 
ti = 0°'33 ^3 = 56'°76 (from curve) = 26°'52, 
we obtain the formula 
188-08 
It — 
(169-03 + 
which gives values in good agreement ^vith those obtained by observation. 
Mean temp. 
'/■ 
Difference. 
Observed (mean). 
Calculated. 
0 
0-33 
-006021 
•006021 
•000000 
. 5-12 
•005688 
•005691 
+ -000003 
10-14 
•005371 
•005374 
+ -000003 
15-30 
•005068 
•005076 
+ -000008 
20-28 
•004803 
•004810 
+ -000007 
25-46 
•004551 
•004555 
+ -000004 
29-94 
•004343 
•004350 
+ -000007 
35-90 
•004095 
•004099 
+ -000004 
41-17 
•003894 
•003894 
•000000 
46-36 
•003704 
•003707 
+ -000003 
.50-91 
•003555 
•003.554 
- -000001 
56-76 
•003371 
•003371 
•000000 
Isohutyl Bromide. (CH3)2CH.CH’3Br, 
After drying with phosphoric oxide, the liquid boiled between 91°'80 and 90°'9b’. 
Bar. 763'8 millims. Corrected and reduced b.p. = 91°'7. 
Vapour density : 
Found, 67'24. Calculated, 68 50. 
Observations for viscosity :— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
'/■ 
Temp. 
Press. 
Corr. 
1 
0 
0-33 
100-32 
•000042 
t 
•008190 
0 
0-36 
100-19 
•000042 
•008203 
7-39 
100-29 
•000046 
•007447 
7-42 
100-18 
-000046 
•007459 
16-11 
100-26 
•000050 
•006679 
16-05 
100-13 
•000050 
•006692 
23-70 
100-22 
•000055 
•006L03 ! 
•23-72 
100-12 
•000055 
•006121 
32T8 
100-81 
•000060 
•005,551 
32-16 
100-69 
•000060 
•005564 
40-33 
100-67 
•000064 
•005094 ! 
40-35 
100-49 
•000064 
•005105 
48-42 
100-72 
•000069 ' 
•004692 i 
48-36 
100-57 
•000069 
•004703 
56-11 
99-94 
•000073 
•004348 ' 
56-18 
99-83 
•000073 
•004355 1 
64-16 
99-96 
•000078 ’ 
•004035 
64-18 
99-82 
•000078 
-004039 i 
72-59 
100-14 
•000083 
•003721 
72-55 
100-02 
•000083 
•003735 : 
80-16 
100-19 
•000088 
•003480 
80-21 
100-06 
•000088 
■003489 i 
87-92 
100-18 
•000093 
•003225 ' 
87-94 
100-05 
•000093 
•003233 1 
