Since **dJ**=-4d9-pdv, we have also the relations **dJ**'/dv' = - p = **dJ**"/dv", at constant temperature.

(39) dG"/dp (D const) =v, **dJ**"/dv (0 const) = p. (40) And all the properties of the substance may be expressed in terms of G or J and their partial differential coefficients.

**Dj** gives ~f between vowels (verger, v i r i d i a r u m), and c as, a terminal (written either ig or lx: goig, g a u d i u m mig, snitx, m e d i u in).

Since **dJ**=-4d9-pdv, we have also the relations **dJ**'/dv' = - p = **dJ**"/dv", at constant temperature.

F" =S 0 0 - (n+1)cp+bp+B„ dG"/dO (p const) =0" = **dJ**"/dB (v const)..

Such interchanges are found as 1 for r, 6 (k, ch) for ~ (**dj**), final i for final e, a for e, a for o.

Putting **dJ** /dm =o at constant volume, we obtain as the condition of equilibrium of the two states J' + p'v' = J" -}- p "v".