278 PHYSIOLOGICAL SEK1I>. 



clearly corresponds to the " feline Sylvian fissure." Tln> 

 arcuate gyrus is bounded by an extensive sulcus, which 

 may be regarded as the, ectosylvian. 



The deep orbital sulcus presents the usual i eat UK - ;m i 

 is joined to the prorean sulcus. The enormously 



Fig. 155. (x$.) 



W 



suprasyiviaii arc (conjoint -ii|tra-vlvian and |.<t>ylvian 

 sulci (is very deep and several deep kink-like radiating 

 sulci proceed from its convexity. 



The combined coronal, lateral, and post-lateral sulci al-<. 

 form a great. invcrl-.l-ll->li;i|.c(l arc, \\liicli i- almost as 

 acutely flexed as the supra.-vlvian ( ti^,>. \^><l k l.")5). 



