74 
DR. T. E. THORPE AHD MR. J. W. RODGER OH THE RELATIOHS 
we obtain the formula 
22-2406 
" (139-932 + ’ 
which gives results in good agreement with those observed. 
Propyl Formate. H.COOGHo.CHo.CHg. 
Boiling-point constant at 80°'77. Bar., 757'0 millims. Corrected and reduced 
b.p. = 80°-89 (80°-9, Y. and T.). 
The following are the observations for viscosity :— 
Left limb. 
Right limb. j 
Temp. 
Pre.ss. 
Corr. 
Temp. 
Pj e.'^.s. 
Corr. 
0-35 
101-51 
-000010 
-006646 
0 
0-35 
101-41 
•000040 
•006649 
7-31 
101-52 
"000044 
-006043 
7-36 
101-45 
•000044 
•006039 
15-54 
101-68 
-000048 
-005456 
15-.54 
101-60 
•000048 
-0054-9 
23-17 
101-65 
-000052 
-004971 
23-15 
101-57 
•000052 
•004979 
30-78 
101-61 
-000056 
-004553 
30-76 
101-53 
•000056 
•004562 
38-54 
101-58 
-000060 
•004182 
38-53 
101-48 
•000060 
•004187 
45-72 
101-45 
-000064 
•003871 
45-74 
101-37 
•000064 
•003880 
54-15 
101-21 
-000069 
•00£5560 
54-14 
101-13 
•000069 
•003568 
61-55 
101-22 
-000073 
-003311 
61-58 
101-12 
•000073 
•003319 
67-13 
101-45 
-000077 
•003124 
67-13 
101-.38 
•000077 
-003149 
74-97 
101-44 
-000081 
-002925 
75-00 
101-35 
•000081 
•002931 
77-54 
101-39 
-000082 
•002859 
77-56 
101-30 
•000082 
•002863 
In reducing the observations we have used for the density at 0° the value 0'9287, 
and the expression 
Y z= 1 -p -0.11903 t + -05201033 t~ + -0715776 
for the thermal expansion. 
Tji = "006647 pg = '002861 
= 0°-35 ^g = 77°-55 
p., (calculated) =‘004361, 
to (from curve) = 34°‘72, 
we obtain the formula 
35-3453 
” (139-283 + ' 
which gives values in close sigreement with the observed results. 
