51G 
MESSRS. T. E, THORPE xVHD J. W, RODGER ON THE RELATIONS 
Oxides. 
Acetic Anhijdride. (CH3.C0)20. 
A. large quaiititv of tliis liquid was shaken for a few minutes with phosphoric oxide 
and distilled. It boiled between 138°'50 and 138°'77. Bar, 749'5 millims. Corrected 
and reduced b.p. = 139°H3. 
Observations for viscosity gave :— 
Left limb. 
Right limb. 
Temp. 
Press. 
Corr 
'/■ 
Temp. 
Pre,ss. 
Corr. 
>]■ 
0 
0T9 
132-09 
-000033 
•012379 
0 
0-18 
131-99 
•000033 
-01-2376 
12o2 
132-14 
-000040 
•010067 
12-53 
13-2-04 
000040 
•010078 
24T3 
132-16 
-000047 
•008509 
24 08 
132-03 
■000047 
-0085-24 
35-43 
13-2-03 
-000054 
•007333 
35-38 
131-91 
•000053 
•007347 
48-13 
132-22 
-000061 
•006296 
48-17 
132-08 
•000062 
■006299 
60-40 
132-36 
•000069 
•005506 
60-38 
132-23 
•000069 
■005505 
71-05 
132-45 
•000076 
•004941 
71-04 
132-31 
•000076 
•004941 
84-40 
132-90 
•000085 
■004339 
84-44 
132-78 
•000085 
•004345 
95-08 
133-37 
•000092 
■003936 
95-10 
133-26 
•000093 
•003939 
108-92 
131-52 
•000100 
•003513 
120-23 
131-45 
•000108 
•003198 
1-20-23 
. 131-34 
•000108 
•003199 
133-43 
131-46 
■000116 
•002893 
133-36 
131-35 
•000116 
■002892 . 
In reducing the observations we have employed Kopp’s value o?(0°/0°) = r09G9 
for the relative density, and his expression 
V = 1 + 0-0J05307i + 0-05l8389i- + 0-0y79iG5i3 
fur the thermal expansion (‘ Annalen,’ 94, 295), 
Taking 
= '0123774 7^3 = -002893 
7^0 (calculated) = '005984 
= 0°'18 
^3 = 133^-39 
(from curve) = 52'^'64, 
we obtain the formula 
27'713 
“ (97-10 + ’ 
wijlch aives results in c'ood ai>'reement with the observed values. 
« . ^ o 
