iMidciillv in lliis case llie (lircc S(>|)arat(> parts, iiilo wliicli llic 

 ori.U'iiiallv coiiliiiiioiis cciilral area of llic (Icniialoiiia lias divided 

 itself as i( were iiiidci' our nci-v eves, mav he considered as the 

 three unities \\ Ineli we helieNcd onrselNcs justified in disliniiiiisliiim- in 

 the doi-matonia '), tlieir eonsiderahle slirinkiuu' lia\ inu made it possible 

 to dcnioiislralc each of Iheni iudi\iduall v. 



l^'oi' tiiese same reasons llie small circular area Itct ween the dorsal 

 and xcnti'al parts, siuiiilies liei'e a maximum (see IIl^-. I /;) in |he 

 lateral part of the central area, similar to the one shown alread\ in 

 the tloi'sal pai'l. 



'J'hough it mav not l)<> found xci'v often, the foreuoinu' ol)ser\atiou 

 stands in no w is(^ alone. In the e.\pei*inient aJso, from which the 

 annexed lig. 4 was laken, the central area, lia\in,u- fallen asunder 

 into three pieces, niiiiht he ol)sei-\ed foi' more than a W(m:^j<. 



Tlie pro]M)rlional i-ai'ity of this last maximnm nia^" \)v easih- 

 accounted for. hi the first place it is relati\-ely a feel)l(» niaxinnini. 

 If therefore the traumatic lesion of the centi-al aiva is too impoi-tanl, 

 the maxinium is desti-oyed, together with the \vhole lateral pai-t. ifoii 

 the contrary it is not important enoniih, in such a manner that,all- 

 thongli tliei'e has Ikhmi an interruption of the central area, still a larger 

 pai't of the lateral piece i-emains unimpaired, the sensible remnant 

 of the lateral piece will confound itself with the \enti-al piece, in 

 order therefoi-e to demonstrate an iso]ate(l maximum, we need a 

 certain degi-ee of exhaustion of the lateral piece, not strictly detinablc, 

 not strong enough to i*endei' this pai't quiie insensible, yet sufliciently 

 strong to (l(^sli-oy its (wentual connexion with the x'cntral piece. ') 



Finally the \-entral part of the central area. This may be represemed 

 as an oblongh sti'elclie(l oxal along the nnd-\'eidral line (see tig. 1 ,().). 



\ Crv i"ai*el\ this may be obsei'X'ed as an isolated w hole, because it 

 easily unites itself with a part of the latei'al piece of the centi-al ai'ca. 

 situated roimdabout the lateral maximum. Still the case does pi-eseul 

 its(df sometimes, whethei' or no the maximum of the lateral pai't 

 has beeji pj'eserxed. b'ig. 5 and (i olfei- instances of this cas(\ w hilst 

 in lig. 7 the same dog, re|)resenttMl already by tig. '1 and tig. .'}, is 

 desiu'iied in another attitude, in ordei' to show the xcntral pa?'t. 



1) See the Pidc c»f tlic Itoyal Acad, of Sciences, mentioned l)ef'ore. 



~) See: Pi'oc. of the P.oyal Acad. Nov. :i(>l" 1001, 11^-. I and also : ( ',. Winki.i-I!. 

 t'eber die rinini)l(iei'nial()ine. Monalscliiill tïir I'sycliiairic and Neurologic, ltd. XIII. 

 Hell :}. 



