( oB:i ) 



The a\eragc values of r and .< sliow a satisfactorv agreement 



with tlie form. (17): 



« 1053 



- z= — 1.99 



r 52S 



Fi'om the aggregate values given in Table lil for three seasons 

 we find : 



Sums. 



p n ^y -f- " = -^^ •'>' /''"■ 



Winter 3849 1340 5189 12.97°,, 2.87 



Spring-Autumn 2959 937 389<> 9.74 3.1(; 



Summer 2380 747 3127 7.82 3.19 



For the values of ,} in these ihree seasons: 



(,>hserv. Tab. Ill ('ale. Tal). MI 



Winter 17 17.05 



Spring-Autumn 14 13.68 



Summer 9.5 9.55 



Anatomy. — "■Andtomical rf search about cerehelhty connectloutt." 

 By L. .1. J. MrsKENs. (second communieation). (Communicated 



bv Prof. ('. WiNKI.KRI. 



A comparalive examination inio dillei'ent species of mammals I 

 have thought desirable in order (o get information about the course 

 of the axis-cylinders arising from tiie cortex cerebelli. The develop- 

 ment of our knowledge in this matter in the last 15 years has 

 resulted in thai at the present time the following tjuestion has been 

 placed in the center of discussion -. do the strands of fibres, which 

 form the supei-ior ('rus cerebelli, arise from the cortex cerebelli stric- 

 tiore sensu or liaxc \\ f to reiiaiMl ilic basal (•(M-('I)ellar nuchn as an 

 undispensaiile inlermediary for ail llicsc corlico-fngal nci'v ctiliresr ( )u 

 the one hand we find in some i-odculia in the lolius p(>ti-osus cere- 

 belli e.\clusi\ely cortex and white matter (sipiirrel), on the other hand 

 we find in others (rabbit) equally a part of the nucleus dentatus 

 situated in the peduncle of that lobe. In hotji animals the lobus 

 petrosus is situated iu a se|iarale bony hole. We find in this lobe 

 therefore a very fortunatt' opportunity for operative procedure therein, 

 leaving tiie otlier neighbouring central striu'tures and also the semi- 

 circular canals intact. We can here in a comparative physiological 

 way find an answer on the above question and at the same time 

 avoid a large cranial aperture. 



