977 
a ery en en neen 
Temperature 7 
308°.5 12527 
346 12958 
379.5 13010 
408.5 13034 
433.5 13065 
450.5 13079 
463.5 13060 
472.5 13071 
486.4 13057 
505 13006 
515 13037 
522.5 13076 
(561) (13092) 
578 13065 
581 13060 
587.5 13043 
588 13044 
589 13051 
589.5 13046 
Mean 13050 
When we now disregard the two first values, because as the 
graphical representation shows, they certainly refer to determinations 
which contain a much greater error than the others, and if we also 
exclude the determination at 561°, because certainly no internal 
equilibrium had set in here yet, we get as mean value 13050. 
Q 
Now that C and Fi are known, we can calculate the pressures 
for the temperatures at which the preparations 1 and 4 have been 
investigated. Doing this, we get what follows: 
| 65 
Proceedings Royal Acad. Amsterdam. Vol. XVII. 
