( 256 ) 



(tuin! plane. This point l> is die iniual solidifying point. On further 

 decrease of the temperature the solidification proceeds along a curve 



'TYh 



Fig. 3. 



B t B, which is obtained by intersection of the melting poinl plane 

 with ;i plane PP'(£R, passing through Pp' and the poinl (,) indicating 

 the proportion in which ortho and meta arc present. For in that 

 plane the proportion of o and m doos not aller during 1 1 1 « * cooling 

 while j> is being deposited. On cooling siill further the composition 

 of the liquid is indicated by the points of the line B,Et along which 

 ortho and para both separate; in lvr meta also begins to separate 

 and all becomes solid. 



It' the quantity of w-nitrotoluene is small, B, is situated very 

 closely to K T and the very short line E 1 B S may be taken as a straight 

 one, of which nso lias been made in the above calculations. 



Amsterdam, Org. chem. Jab. Univ. Aug. '08. 



