133 

 evsr, thin ths gemmulss obser/eJ in the neurones of the strii- 

 tu-n. 



The internal stracture of one of these neurones is shown 

 in Fig. '^3, p.t.n. The or^aniz^ition is markedly motor in type. 

 There is an abaniance of cytoplasm investing the nucleus on all 

 sides. The nucleus is a sharply defined, central body, /lilh a 

 single nucleolus, and chromatin which is disposed in a condi- 

 tion strongly suggestive of a reticulu-a, although not actually 

 appearing so. The tigroid-bodies are quite large in the re- 

 gion of the nucleus, the largest, in fact, of any tigroids 

 found in the forebrain. Vore slender tigroids extend into the 

 dendrites for some distance. In the cell figured, the axone 

 exhibits a small axone-hillock of oval form. 



Tae axone arises from the cell-body, (Pig. *i8, p.t.n. ), or 

 from the thickened base of a large dendrite, (Pig, 39). It pur- 

 sues a straight course, although one with many local sinuosi- 

 ties. The several axones of this class come to lie in the 

 superficial zone, and they are gathered into a longitudinal 

 bundle which lies as a broad cap on the neurone-aggregate of 

 the pallial eminence (Pig. 31, tr.p.). This is the beginning 

 of the tracLiS pallii. The pallial tract runs backward to the 

 great posterior carve of the forebrain, where it dips ventrally 

 to the base and enters the interbrain. Here it decussates and 

 passes onward towari the oblongata. The tractus pallii is the 

 mantelbiindel of "Ldinger ('38). 



