( 545 ) 
2 
log*® iy = 2,154 — 0,43438 y—log’ p ; p=300 gp — = 5 
from which we calculate: 
a 5.00 
| | | | | iz 
7 4.731 | 0:435 | 4.449 | 2456 — 56 
6 | 00) 0.286. | A477 | ot |. A 
5 —0.117 | 0.401 1.278 | 1668 | —168 (£) 
4 | —0.48 | 0.698 | 1.414 485 —150 (D) 
3 | 0.374 | 0.898 | 1.590 | 1081 | 181 
a | 0.984 | 0.952 | 1.71 | 861 | —261 
1 | 4.790 | 0.991 | 9.193 | 562 —262 (C) 
0.5 9.938 0.907 | 2.906 | 301 —151 
So the coincidence D,C lies just before 50°, and the first appear- 
ance of the pressure of coexistence between 50° and 60°. By inter- 
polation we find easily the value 7’= 49 (p = — 382) forthe point 
027) for the 
tel fig. 28), and the value 7= 54 (p= po = 
point Q (comp. also fig. 29). 
Now we have still to caleulate 7’= 70 for the calculation of the. 
30 
point Cr. For this A and we have: 
0.5 | 9.355 | 0.998 | 2.998 300 495 
8 : 2700 
log** iP = 2,271 — 0,4843 p — log’ p ; p= 350g — ee 
which gives rise to the following table. 
T=-10 
p | log*® | Bp v | al, p 
7 |A6t4| 0.454 | 4.498 | 2123 | +397 
GUA AED 05967 | 1.191. 1 4903 +197 
5 | —0.600 | 0.448 1.295 | 1610 +140 
4 —0.068 | 0.679 | 4.439 | 1303 + 97 
3 | 40.491 | 0.869 | 4.597 | 1059 | 9 
2 1101 | 0.063 | 4.778 | 855 | —155 
| | 1.837 | 0.993 | 2.194 561 —214 (C) 
42 
Proceedings Royal Acad. Amsterdam. Vol. XIII. 
