488 
MESSRS. T. B. THORPE ARD J. W. RODGER OR THE RELATIORS 
Left limb. 
Riglit limb. 
Temp. 
Press. 
CoiT. 
'/• 
Temp. 
Press. 
Corr. 
>]■ 
0 
0-50 
100-53 
-000067 
-004036 
0 
0-56 
100-44 
•000067 
•004035 
5-95 
100-.38 
-000070 
-003797 
6-02 
100-32 
•000070 
•003804 
11-19 
100-21 
-000074 
•003596 
11-20 
100-15 
•000074 
•003600 
16-68 
100-06 
-000077 
-003406 
16-64 
100-05 
•000077 
•003409 
21-94 
99-92 
-000080 
-003228 
21-93 
99-87 
•000080 
•003232 
28-34 
98-69 
-000083 
-003038 
28-31 
98-68 
•000083 
•003039 
33-98 
98-48 
-000086 
-002884 
33-96 
98-40 
•000086 
•002887 
88-.34 
98-31 
-000089 
-002775 
38-41 
98-24 
•000089 
•002773 
42-10 
98-08 
-000091 
-002680 
42-11 
98-02 
•000091 
•002683 
The value 0'9610 for the relative density at and the expression 
V = i + -0313218^ + -055078^2 — *0741915^3 
for the thermal expansion (Zander, ‘ Annalen,’ vol. 214, p. 143), have been employed 
in the reduction of the observations. 
Taking 
= '004035 173 = '002681 rj^ (calculated) = '003289 
=■ 0°'53 ^3 = 42°'10 ^3 (from curve) = 20° 10, 
we obtain the formula 
27'705 
~ (157-08 + ’ 
which gives results in good agreement with those obtained by observation. 
Mean temp. 
V- 
Difference. 
Observed (mean). 
Calculated. 
0 
0-53 
•004035 
•004035 
•000000 
5-98 
•003800 
•003803 
+ -000003 
11-19 
•003598 
•003599 
+ -000001 
16-66 
•003408 
•003404 
- -000004 
21-93 
•003230 
•003231 
+ -000001 
28-32 
•003039 
•003039 
•000000 
33-97 
-002885 
•002884 
- -000001 
38-37 
•002774 
•002771 
- -000003 
42-10 
•002681 
•002681 
•000000 
Methylene Chlo^nde. CH 3 CI 3 . 
A quantity of this liquid, obtained from Kahlbaum, was placed over phosphoric 
anhydride and distilled. It boiled between 40°'68 and 40°'88. Bar. 7G9'2 millims. 
Corrected and reduced b.p. = 40°'41. 
