546 
MESSRS. T. E. THORPE ARD J. W. RODGER OH THE RELATIOHS 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr. 
V- 
Temp. 
Press. 
Corr. 
1- 
0 
0°49 
128-79 
000002 
•137969 
9-31 
129-15 
•000004 
•082034 
18-48 
128-73 
•000006 
•049978 
27-24 
128-86 
•000009 
•033643 
36-42 
128-79 
•000013 
•023322 
45-05 
128-87 
•000017 
•017135 
53-18 
128-79 
•000022 
-013199 
62-95 
128-87 
•000028 
•009943 
71-91 
129-08 
•000035 
•007931 
81-06 
128-95 
•000043 
006400 
89-94 
129-09 
•000051 
•005301 
95-69 
129-18 
•000056 
•004722 
95 72 
12908 
•000056 
•004714 
96-70 
128-98 
•000057 
•004643 
In reduclnp^ the observations we have taken Perkin’s value d (15°/15°) = ’Sill 
for the relative density (‘Chem. Soc. Trans.,’ 45, 471), which gives (:/(0°/4°) = ’8269, 
and the expression 
V = 1 + -OalOGeU + -0517643^2 + 
(Thorpe and Jones, loc. cit.) for the thermal expansion. 
Three formulse are required to reproduce the values with approximate accuracy. 
The first extends from 0° to 27°, the second from 27° to 63°, the third from 63° to 95°. 
They are respectively as follows :— 
35091-0 3255-20 _ 2159-86 
■ ~ (47-922 + 0“ ’ dt — ( 37.007 + tfrm ’ ^ • Vt — ( 33.340 + ‘ 
The agreement between the observed and calculated values is seen in the following 
table :— 
Mean temp. 
>h 
Difference. 
Observed (mean). 
('alciilated. 
0 
0-49 
•137969 
•137969 
•000000 
9-31 
•082034 
•080650 
- -001384 
18-48 
•049978 
•050067 
+ -000089 
27-24 
•033643 
•033643 
•000000 
36-42 
•023322 
•023278 
- -000044 
45-05 
•017135 
•017133 
- -000002 
53-18 
•013199 
•013204 
+ -000005 
62-95 
•009943 
•009943 
•000000 
71-91 
•007931 
•007935 
+ -000004 
81-06 
•006400 
•006418 
+ -000018 
89-94 
•005301 
•005303 
+ -000002 
95-70 
•004718 
•004718 
•000000 
96-70 
•004643 
•004625 
- -000018 
