( 648 ) 
It appears from these tables that the coincidence D,C now takes 
place at L= = dt (pp ¢ = — 534). Further that the first pressure of 
coexistence -e liquid-solid (fig. 29) appears at 7’ = 44,7 (p =p, = —9524). 
2 700 
For then we have with p= 298p — : 
Vv 
, resp. for p—4, 3 and 2: 
afs = 17244 1408,8 1119,6 
p = 5324 —514,8 —523,6 
E D G 
so that the pressure of coexistence is about 523,6, p, also having 
this value. 
Finally it appears that the coincidence /,D takes place at 7’= 46,7 
(Pr p= —463). For then we have resp. for p= 4 and 3: 
4 2 —1708,4 and 13968 ; p=463,1 and 462,8. 
So in the case 45 —0,3 the whole coexistence-curve only stretches 
over an interval of 2’ viz. from 44°,7 to 46°,7, again in the region 
of negative pressures, hence not realisable. 
29. It is now easy to derive that the coexistence-curve entirely 
disappears from the field for 
Ab == 0200 (Total, ps Of). 
Then for 
T=—43, p=— 570 
the end-points 2 and Cr coincide, and in the isotherm of 43° the 
points 47, D, and C coincide to a contact of higher order. 
For 45 == 0,4 the difference of temperature between the end-points 
P and Cr amounts to 14°, whereas this is only 2°,7 for Ab = 0,3. 
By interpolation we find from this that the difference 2°,7 has been 
reduced to O for Ab = 0,8 — 0,24 (0,4—0,3), ie. for 0,276. Then 
T'p.c == Tepe — 44 — 0,24 x Ei 42,8, while PDC = PEDC = 
— — 534 — 0,24 X 152= — 570. 
If we finally comprise everything found for A5 positive in one 
table, we get the following summary. 
Ab=0.5 | 0.4 | 0.3 | 0.276 
Tp =52.3 (p =— 289) | 49 (382) | WM (534) | 
Ty =02 (p=—200) | HHM) | 44.7 (5) | 42.8 (—570) 
Tce, =80 (p=+2%9) | 63 (— 76) | ae ae 
