192 JOSEPH DUERSON STOUT 



above the superior extremity of the olfactory lobe. In cat 11, 

 figure 14, a very large area, extending from the anterior extremity 

 of the coronal fissure to the inner end of the crucial sulcus and a 

 short distance onto the median surface of the hemisphere and 

 forward to within 0.5 cm. of the upper part of the olfactory 

 lobe. In cat 14, figure 15, a moderate sized area, half way 

 between the crucial sulcus and the olfactory lobe. 



The fore limb field is likewise subject to considerable variation, 

 though less than the head and neck field. On the right the fol- 

 lowing distribution is found. Cat 8 (fig. 9), a very large field, 

 including practically all of the motor field demonstrated for this 

 animal, and extending from the anterior angle of the lateral 

 fissure to the upper end of the supraorbital fissure, from the 

 middle of the crucial sulcus almost to the coronal fissure. Cat 9 

 (fig. 10), a small field immediately anterior to the crucial sulcus 

 and extending almost to the median line. It is to be noted that 

 this is the only animal in which the fields for the fore and hind 

 limbs do not coincide at some point in their extent. Cat 10 

 (fig. 11) a small area immediately anterior to the outer half of 

 the crucial sulcus. Cat 12 (fig. 12), a moderate sized field em- 

 bracing both banks of the crucial sulcus and extending outward 

 and forward to the coronal fissure. On the left cortices the fore 

 limb field is as follows: Cat 10 (fig. 13), a small field lying be- 

 tween the anterior end of the coronal fissure and the posterior 

 end of the supraorbital fissure. Cat 11 (fig. 14), a very large field 

 extending from the posterior four-fifths of the coronal fissure to 

 the middle of the crucial sulcus. Cat 14 (fig. 15), from the middle 

 third of the coronal fissure inward to a line 0.5 cm. from the 

 median line, and lying mostly in front of the crucial sulcus. 

 Cat 15 (fig. 16), a narrow zone lying along the banks of the 

 crucial sulcus and extending from the coronal fissure almost to 

 the median line. 



The fields for the hind limb are located as follows : Right 

 cortices, cat 8 (fig. 9), from the anterior angle of the lateral 

 .fissure to a line half way between the crucial sulcus and the 

 upper end of the supraorbital fissure, from the middle of the cru- 

 cial sulcus to within 2 mm. of the posterior third of the coronal 



