402 



Some other derivatives of aromatic phenoles: Anisot, Plmietol, 

 Anethol, Guajacol, Eesorcine-Mono-, and Dimetliyletliers; Hydrochinon- 

 Dimethylether have been described before bj the first of ns'). The 

 temperature-coefficients of these componnds are however also reviewed 

 in the present communication, because they were not mentioned in 

 the one referred to. (Vid. also the preceding communications.) 

 Moleculai' Surface energy 



in Erg pro cui~ 



Fig. 3. 



'£0° O" 20" ^' 60' SO' J00'f20°/'i0''/6cr/é(r200 220 i^^eral^U1z, 



1) F. M. Jaeger, These Proc, Comm. 1. (1914) p. 354 seq. 



