877 
situated as in fig. 3, with respect to their directions of temperature 
and pressure. 
(M) 
aar 
(4) 
ie 
Fig. 3. 
b. Now we have: 
In the same way as in I we 
may show that curve Zo must be 
situated below curve (A) and above 
cl the metastable part of curve (5), 
etc, so that we obtain a partition 
of curves as in fig. 3. 
Fig. 2 and 3 differ from one 
another only in this respect that 
curve (£) goes, starting from m 
in fig. 2 towards lower and in 
fig. 3 towards higher pressures. 
ARN en (OP dan (A VAR 0 (AV la 0.5 (A V)gz0 
(AM), (AH) and (AH) 
The isovolumetrical reaction 
pO (AA), andsAH )\z< 0 
becomes: 
AA CST, OAD S 0 
(Z) (L) | 
Towards lower 7’ 
Li) (A) 
Towards higher 7’ 
The isentropical reaction becomes: 
ZtA+G24,4+ L (2 ae Ol os <0 
ZE) (Ey - | (2) (A) (6) 
Towards lower P| Tow 
Fig. 4. 
ards higher P 
From beth these reactions it follows 
that the curves must be situated as 
in fig. 4 with respect to their directions 
of temperature and pressure. In the 
same way as in / we may show now 
again that curve (Z,) must be situated 
below curve (A) and above the meta- 
stable part of curve (Z), etc. so that 
we obtain a partition of the curves 
as in fig. 4. 
Figs. 3 and 4 differ from one another 
only in that respect, that curve (Z,) goes starting from m in fig. 3 
towards higher and in fig. 4 towards lower pressures. 
c. Now we have 
