1024 
2Q+3R4+7S=2P437T+7V.. . . (48) 
And for the reaction of the equilibrium V’ that: 
Q+t7S+70U=8P+2R+57T ... . (19) 
It follows from those equations of reaction that: 
OA SN Lj TU Vee sda) OUA IO) LERT NE 
OSU NPL Ve eae Lo) PORT VSNU Ve. ea 
GaP sal Ls eem 7) ORS || PT VY nd) 
(Ores OIG Pas EEEN Et AT RN 
In (18a) and (144) we have taken P’ at the right of Q’, so 
we shall do it also in the P,7-diagram. [Let the reader draw in 
order to facilitate the matter this and the following curve ina P,7- 
diagram; then he will see that (20) gives a symbolical representation 
of this). Further it is apparent from (13a) and (14a) that R’ is 
situated at the left of P’ and at the right of Q’, consequently 
between / and Q’. It follows further from (18a) and (14a) that S’ 
is situated at the left of P’ and of Q’, consequently in the angle, 
formed by the stable part of Q’ and the metastable part of P’. It 
follows also from (13a) and (14a) that 7” is situated at the right 
of P’ and Q’, consequently within the angle formed by the stable 
part of P’ and the metastable part of Q’. 
As however this angle is divided into two parts by the metastable 
part of carve S’, we have still to define the position of S’ and 7” 
with respect to one another. We see this e. g. from (167) from which 
it is apparent that 7” must be situated on the same side of S’ as 
the curves P’, Q’ and R’. Consequently curve 7” is situated within 
the angle, formed by the stable part of P’ and the metastable part of S’. 
Further tt follows from (18a) that U’ and V’ are situated at the 
right of P’, from (14a) it follows that these curves are situated at 
the left of Q’, consequently U’ and V’ are situated within the angle 
formed by the metastable parts of P’ and Q’. However we find 
yet also within this angle the metastable part of curve 2’, so that we 
have still to define the position of R’, U’ and V’ with respect to 
one another. We find this easily from (15a); hence it is apparent 
that U’ is situated on the same side of R’ as Q’ and S’; eonse- 
quently U’ is situated within the angle formed by the metastable 
parts of the curves R’ and P’. Further it follows that V’ is situated 
on the same side of R’ as the curves P’ and 7”, so that V’ must 
be situated between the metastable parts of R’ and Q’. 
We have defined, therefore, the position of the curves in the 
P,T-diagram, although we have only used four [13a, 14a, 15a and 
