08U ]\IESSRS. T. E. THORPE AND J. W. RODGER ON THE RELATIONS 
Formula, = C/(1 + + yt^). 
ft- 
7- 
t. 
X 10^ 
(Calc.). 
X 10 -’ 
(Obs.). 
Difference 
X 10-’. 
Pentane . 
•01044 
•0^2301 i 
30 
212 
212 
0 
Hexane. 
■01122 
•0^3337 
60 
221 
221 
0 : 
Heptane. 
•01214 
•0^4004 
90 
214 
214 
0 
Octane. 
•01394 
•0,^4926 
120 
208 
208 
0 
Isopentane . 
•01088 
•0,1331 
30 
204 
204 
0 ! 
Isoliexane. 
•OHIO 
•0,3509 
60 
207 
208 
1 
Isoheptane . 
•01199 
•0,3863 
i 80 
216 
216 
0 
Isoprene . 
•01002 
•0,1542 
30 
198 
198 
0 
Amylenc. 
■ 00954 
•0,2000 
‘ 30 
194 
194 
0 
j Diailyl. 
•01118 
•0,3017 
! 50 
207 
207 
0 
Methyl iodide .... 
•01067 
•0,1719 
1 40 
409 
409 
0 
Ethyl iodide .... 
•01113 
•0,2658 
70 
377 
378 
1 
Propyl iodide . 
•01278 
•0,3493 
' 100 
1 
358 
359 
1 
Isopropyl iodide . 
•01277 
•0,3809 
' 80 
387 
389 
2 
Isobutyl iodide 
•01523 
•0,4600 
120 
333 
338 
5 
Allyl iodide. 
•01316 
•0,3441 
100 
349 
352 
3 
Ethyl bromide .... 
•01064 
•0,1822 
i 30 
357 
357 
0 
Propyl bromide 
■01174 
•0,3121 
i 70 
326 
327 
1 
Isopropyl bromide 
•01193 
•0,3588 
! 50 
358 
358 
0 
Isobutyl bromide . 
■01333 
•0,4762 
* 90 
318 
316 
-2 
j Allyl bromide .... 
•01177 
•0,2871 
70 
315 
316 
Ethylene bromide. 
•02007 
•0,7018 
130 
513 
518 
5 
Propylene bromide . 
■01924 
■0,7668 
140 
444 
456 
12 
Isobutylene bromide . 
•02379 
•O 3 I 2568 
140 
489 
505 
16 
Acetylene bromide . 
i 
•01339 
•0,2999 
100 
466 
474 
8 
Propyl chloride 
•01104 
•0,3381 
40 
291 
291 
0 
Isopropyl chloride 
■01185 
•0,2580 
; 30 
291 
291 
0 
Isobutyl chloride . 
•01318 
•0,4045 
60 
302 
302 
0 
Ally] chloride .... 
•01111 
•0,2639 
1 40 
1 
273 
0 
Ethylene chloride . 
•01653 
•0,5451 
80 
422 
426 
4 
Ethylidene chloride . 
•01270 
•0,3252 
! 50 
362 
362 
0 
Methylene chloride . 
•01118 
•O 4 I 866 
j 30 
396 
396 
0 
Cldoroform. 
•01149 
•0,2588 
‘ 50 
427 
426 
-1 
Carbon tetrachloride 
•01501 
•0,6747 
60 
520 
524 
4 
Carbon ilichloride 
•01294 
•0,3243 
120 
377 
382 
5 
