82 
DR. T. E. THORPE AND MR. J. W. RODG-ER ON THE RELATIONS 
The value 0‘7544 for the density at 0 °, and the expression 
Y = 1 + -0^13116 t + -0526162 
given by Dobrtner (‘ Annalen,’ 243, 4), have been employed in reducing the 
observations. 
Taking 
= '003953 •> 73 = ‘002159 770 (calculated) = -002921, 
— 0°'35 ^3 = 60°'18 ^0 (from curve) = 28°'16, 
the formula 
284-675 
~ (183-355 + 
is obtained. The agree-ment between the observed and calculated values is remarkably 
close. 
Biijroiiyl Ether. CH 3 .CH 2 .CH 2 . 0 .CH,.CHo.CH 3 . 
Prepared by Kraeft’s method, and submitted to repeated fractionation from sodium 
wire. The fraction used in the determinations of viscosity boiled between 89°-86 and 
89°-90. Bar. 760'8 millims. Corrected and reduced b.p. = 89°'84. 
The observations for viscosity gave :—■ 
Left limb. 
Temp. 
Press. 
Corr. 
V- 
0-53 
101-92 
-000041 
•005359 
8 -6-2 
101-76 
-000045 
•004821 
16-96 
101-35 
•000049 
•004355 
24-66 
101-29 
-000053 
•003980 
32-44 
101-12 
•000057 
•003653 
40-46 
102-27 
•000062 
•003359 
48-03 
101-93 
•000065 
•003113 
56-15 
101-86 
•000070 
•002877 
64-18 
101-71 
•000074 
•002662 
72-48 
101-.35 
•000078 
•002468 
81-53 
101-23 
•000083 
•002280 
88 -UO 
101-25 
•000087 
•002154 
R 
igbt limb. 
Temp. 
Press. 
Corr. 
>h 
6-64 
101-91 
•000041 
•005359 
8-53 
101-77 
•000045 
•004831 
16-94 
101-30 
•000049 
•004362 
24-65 
101-26 
■000053 
•003990 
32-47 
101-06 
•000059 
•003656 
40-48 
102-31 
•000062 
•003361 
48-10 
101-86 
•000065 
•003115 
56-14 
101-82 
•000070 
•002876 
64-14 
101-69 
•000074 
•002667 
72-70 
101-32 
•000078 
•002470 
81-42 
101-19 
•000083 
•002288 
88-03 
101-17 
•000087 
•002154 
The value d ( 0 °/ 0 °) = 0'7633 for the relative density, and the expression 
Y = 1 -f -O 2 I 2132 t + 'O 5393 I 8 _ -0.13644 t?, 
obtained by Zander (‘Annalen,’ 214, 163), have been used in reducing the 
observations. 
