508 
5FESSKS. T. E. THORPE AND J. W. RODGER ON THE RELATIONS 
'J aking 
= ‘002663 7^3 = -002234 
rj^ (calculated) = ‘002439 
= 0°‘33 
^3 = 19°‘17 
t .2 (from curve) = 9°‘60, 
we obtain the formula 
15652‘2 
~ (286-11 + ’ 
which gives numbers in almost exact agreement with the observed values. 
I'leau temp. 
>]■ 
Difference. 
Observed (mean). 
Calcirlated. 
O 
0-3o 
-002663 
•002663 
•000000 
5-35 
-002538 
-002538 
•000000 
9'56 
•002M2 
•002440 
- -000002 ! 
13-92 
-002345 
•002344 
- -000001 
19-17 
-002234 
•002234 
•000000 
Acids. 
Formic Acid. H.COOH. 
Vv^e are Indebted to Dr. Perkin for the sample of formic acid whicli has served for 
our observations. It was a portion of that employed by him in determining the 
magnetic rotary polarization of this substance. It boiled at 101° (corrected). 
The observations for viscosity gave ;— 
1 
! 
Left 
limb. 
Right limb. 
Temp. 
Press. 
Corr. 
'/• 
Temp. 
Press. 
Corr. 
V- 
o 
7-59 
128-61 
•000018 
•023864 
7-59 
128-50 
•000018 
•023837 
15-94 
128 66 
•000021 
•019513 
15-99 
128-52 
•000021 
•019503 
24-16 
128-70 
•000026 
•016336 
24-16 
128-60 
•000026 
•016353 
32-89 
128-.35 
•000031 
•013777 
32-84 
128-29 
•000031 
•013811 
40-44 
128-32 
•000035 
•012058 
40-29 
128-19 
•000035 
•012092 
48-06 
128-37 
•000039 
•010628 
48-01 
128-21 
•000039 
•010654 
56-31 
128-26 
•000014 
•009359 
56-29 
128-13 
•000044 
•009380 
64-16 
128-22 
•000049 
•00S373 
64-24 
128-07 
•000049 
•008379 
72-06 
128-21 
•000054 
•007537 
72-04 
1-28-08 
•000054 
•007546 
80-24 
128-00 
•000059 
•006801 
80-19 
127-86 
•000059 
•006817 
88-24 
128-17 
•000064 
•006176 
88-14 
127-90 
•000064 
•006195 
97-19 
128-18 
-000071 
•005582 
97-26 
128-05 
•000071 
•005586 
