( 266 ) 
Formation of sulphone does therefore not occur with: 
DG X 
NO, <>. a NO, in which X may be 
NO, NO, 
NOs, CN or CH3; it takes place however, with: 
NO, NO; 
A ib, Wa % 
NO. vi Ne 
exer AE 
Ene EE 
NO, 
and with: wk SCH. 
ES Pas 
NO, 
The influence of other atoms and atomic groups such as Cl, Br, COOH 
and also of three ortho-placed groups will be further investigated. 
Amsterdam, Nov. 1901. Org. Chem. Lab. Univ. 
Physiology. — “On function and structure of the trunkdermatoma.” 
By Prot C. Winker from researches made in connection 
with Dr. G. VAN RIJNBERK. 
The basis on which is founded the actual physiological knowledge 
of the innervation of the skin by the posterior roots, through which 
we are taught in what manner the arca’s of those roots are ranged 
on trunk and extremities, is to be sought in most ingeniously con- 
ceived and eminently well-executed vivisections, made by Lupwic 
