1685 
figs. land 2. There is a great difference, however, in the position of 
the bundle of curves B. In the P,7-diagrams belonging to table 1, the 
bundle of curves B is viz. divergent in direction of temperature; this 
is no more the case in the four new diagrams. In each of the new 
diagrams viz. the ‘whole bundle B goes in the same direction as 
group Aa; in figs. 1 and 2 (and the two other P,7-diagrams) we 
have to turn the group B, so far towards the group B, until bundle B 
diverges no longer. 
Let us now take the case that all values of u are positive in 
(14); the series of signs « and 5 in table 1 then become the same. 
Table 1 then passes into table 2, so that we obtain again four 
P,T-diagrams. Let us consider only the case AV <0 and Ay>0, 
consequently series # and / of table 2. It appears at once from 
those series that the curves of the groups A, B, and C all go 
towards higher pressures and temperatures, starting from the invariant 
point, and that those of the groups R, S, and 7’ go towards lower 
pressures and temperatures. It appears from the direction of the 
increases from the 
" 
d 
arrow in table 2 that the absolute value of aT 
€ 
TAB eee 2: 
A R B Ss | @ za 
ES dE — EE AV Oee 
| | 
+.... a a aero raise OD 0; Ax h 
AP | | He | meee | enen | mene | bee. | AVO € 
| 
AT Fwa en | fee. aeons Fee [meee | 4y>0 d 
SP bains [maere | Heres | meene ence | aude | 40 0 
AT — | + -- a ERN aA An<0 f 
| | | 
ieee | ; 
BP | ance fee | ones [fer | uses [Beans | OO g 
AT |-—.... TENEN tonne dens | meee +.... | Awd h 
| | | 
— En Te il en _ wits —_ 
LY | i ea | PN Sl eee AV<O i 
AT lens teres |) Teis ene even [menen | Ax>0 k 
dP 3 
aT ER IT TT 
