( 1159 ) 
boundaries of the ZL III and ZIV zones even pass over this point 
and consequently run together over the whole of the medial crural 
surface, whilst the caudal boundary of II, leaving this line some- 
where in its course, diverges thence with the common caudal boundary 
of the ZIII and LIV zones. 
The eranial boundary of the stryehnine-zone of SJ, as is clearly 
shown by Fig. XXIII, likewise leaves the mid-ventral line just before 
the symphysis, after a short course it bends more candalward in 
the direction of the epicondylus femoris medialis, and continues 
farther, over the point mentioned above that lies in the middle between 
this epicondylus. and the fossa poplitea, in the direction of the malleolus 
medialis. Evidently here on the medial crural surface too, there isa 
demarcationline between skinfields that are not originally bounded 
by one another. 
WINKLER and vAN RUNBERK, in their VIIt® communication have 
stated an identical course for the demarcation-line between the 
dermatomata of “.U, “2.1, £.1V and SJ, and by them this line 
is denominated the “ventral axis-line’ (SHERRINGTON) or the “ventral 
differential boundary” (Bork) of the extremity. 
As may be seen from the foregoing, there is a striking accordance 
between the results of the researches on the dermatomata of those 
authors, and the facts stated in this communication. 
This accordance however goes still farther, for it is shown not 
only in what may be called “normal” cases‘), but also in such 
(PZ, 
* 
+ 
Fig. XXIV, Fig. XXV. 
hie. Villy, 2 (Fig. VIL. 2. 
LIV. Dog 19. Prefixion ofthe extremity ZIV. Dog 19. Prefixion of the extremily 
(after Winkter and van RunBerw)|. (after Winker and van KijnBerk)]. 
1) In as much as the term “normal” may be applied to any relations concerning 
the peripheral skin-innervation. According to the data of WINKLER and VAN RIJNBERK, 
SHERRINGTON’s “prefixed” and “postfixed type’? must be considered as extrema 
