1J5 



Witli regard to the 7\Y-lig. we must point out, that as was 

 already remarked by us before'), the pseudo-system of the phospho- 

 rus is most probably ternar)-, and that the third kind of molecules 

 whicli has been left unconsidered up to now, plays probably a 

 principal part in the change of the point of solidification of the 

 white phosphorus. To simplify the representation we can disregard 

 tliis third kind of molecules and take tlie pseudo system as binary, 

 at least when our point of consideration is the connection between 

 the white and the violet phosphorus. 



Now the difference in properties between the white and the \ iolet 

 phos|)horus, just as the dilference in volatility and melting point 

 suggest with great probability lliat we have to do here with a 

 system of molecule-kinds, whicii dilfer in ^icc. Hence we have 

 probably to do here with tlie case of a.'t.iocia/iini. and the violet 



Fie. 5. 



Fig. 6. 



1) Z. .f. phys. Ghem. 88, 621 (1914). 



8* 



