( m ) 
fact that for phosphorus we have to do with solid inner equilibria] 
between white and violet phosphorus. 
If we consider the following results of the determinations of the 
specific gravity: 
spec. grav. of red P obtained at 550° = 2,25 9 
” » » » „ „ 450° =2,28 
” » » » » „ 357° = 2,22 
” ” » » » „ 215° =2,19 
we should, in view of the fact that the spec. grav. of white i*-— i 82 
and that of violet P may be put at Zut 2,34, come toZZl 
viZ"J n C " rVe f0r the inner Solid equilibria runs to the 
ioiet side with rise of temperature to 45CT. 
that S when°mdT’ f ° Il0W ® d from ,he experiments of Cohen and Ouk, 
hat when red P was reduced from a higher to a lower temperature 
have^ot r” f neral WaS l0Wered ' k is clear they 
have „ot invert.gated states of equilibrium, and that we, therefore 
cannot draw conclusions about the course of the curve of the inner 
ss rom ,he H above resui,s - As to ,he ex > sten ce of !i: ZZ 
equilibria, however, this is no longer doubtful 
observedTvT “ d if We ,hen thi,,k of the phenomenon 
r ., . J .Chapman ) that red P when melting, gives a colourless 
^quid i.e. a liquid which perfectly resembles melted yellow P a 
* COnS “ UCled in hues for the P L,do-binary 
^ ” ‘I ' ’ Whid '’ h0WeVer ’ existence of a eutectic 
point is still an open question 
wl h pJTaTr d r in fig 6 ,hat red P ^ P ‘ iS a pointer of 
P(«P>, and therefore no eutectic point is drawn In this 
forTeaS ChAPMAN has »een illustrated, 
lYouid / ! ,e , meUlng - I,0int ' lhe tod solid phase will pass into a 
further from Th T en ' irel '' 0,1 ,he Side of ,h o white P. We see 
urther from this diagram that melted vellow P has about the same 
zs * h 1- — 
Applications. 
*) Joum. Ghem. Soe. 75, 743 (1899). 
