( 495 ) 



/'„ and /',)• '^^T"^ l)ol()\v tliat pari of iIk- ciii-xo AA, tlmt lios hotwoon 

 the [toiiil of ('oiilac'l and llic poiiil A, '). 



If 'we fiirllicr cojisidcr llic case llial llio composilioii is ,/•,, and the 

 xoliiiiio r,,, xve liaxc I lie case tliat w idi rise of UaiipcM'aliire we o-el 

 from llie lliree-pliase-(ria,ii,iile iiilo llie reui(»ii for /. -|- S/; aiid so 

 fliat llie \apoiir disappears. Willi finilicM- increase of leniperalnre 

 we j)ass dir(H*llv tVoiii the rog'ioii /. -|- N/; i'do llie ^as-i-e,<;ion, Jnst 

 as for llie condilion .i\, r„ we passed IVoni llie region S/; -{-(,' inio 

 llie gas-re^-ion. In the reniaiiiiiin' cases iiolhinn- noleworlhv lakes 

 place; wo iHiisI only point out, llial for syshMns of Ihe Ivpe of 

 fig. 4 the critical phenomenon can only l»e ohserxcMl loi- nnstilnrnh'd 

 solutions. 



Fig. 7 applies to systems of th(^ type of elh(M--anlliraqiiinone. The 

 difFerence bctw^een Ihis figure a,n<l IIk^ preceding one li(\s in the fact 



1) Gentnek.szweh (ZeiLsclir. f. i';i('kt,i(icli('iii. N". iO S. 7!»'.l (]<.)():{) h.is lately iliawn 

 attention to this relrugrade plienuuiciion. 



