518 
MESSRS. T. E. THORPE AND J. W. RODGER ON THE RELATIONS 
Taking 
= -015921 
= 0°-47 
7^3 = ’002867 (calculated) = ’006755 
^3 =; 148°’66 (fruin curve) = 56'’’32, 
we obtain the formula 
31-312 
~ (85-011 + ’ 
which gives the following calculated values :— 
Mean temp. 
'/• 
Difference. 
Observed (mean). 
Calculated. 
0 
0-47 
•01.592 
•01592 
•00000 
14-70 
•01220 
•01225 
+ '00005 
20-97 
•00960 
•00960 
•00000 ; 
44-86 
•00780 
•00780 
•00000 
59-.52 
•00651 
•00650 
- -00001 , 
74-87 
-00549 
•00547 
- -00002 ! 
94-87 
•00450 
-00449 
- -00001 
104-52 
•00412 
•00410 
- -00002 1 
119 57 
•00361 
•00360 
- -00001 
134-65 
•00319 
•00319 
•00000 
148-66 
•00287 
•00287 
•00000 
164-56 
•00254 
•00256 
+ -00002 
Ethyl Ether. CHg. CH.. 0.CH 3 .CH 3 . 
Two independent preparations of ethyl ether have been made use of in our 
observations on the viscosity of this substance. 
The first, made specially for us by Professor Dunstan, after standing in contact 
with sodium wire for a day was distilled. It boiled completely between 34°’3 and 
35°’0 ; on redistillation the greater portion hoiled between 34°’5 and 34°’7. Bar. 
764’3 millims. Corrected and reduced b.p. = 34°’48. 
Vapour density : 
Found, 36’66. Calculated, 37' 00 . 
The observations for viscosity gave :— 
