124 



from the general striatum by tha smaller size 'inJ more closely 

 cro**iei iisposition of its nearoaes. The neurone.? are not ar- 

 ranged in any definite order; they are of the Golgi TI type, 

 sealing their axones ventro-laterally into the striatum; refer 

 to Pig. 3?. 



The celL-body of such a neurone rant^es from triangular to 

 polygonal in outline. There are three or four dendrites of on- 

 ly moderate length. These seldom branch except near their ba- 

 ses. They bear a very fev* geramules and irregular knobs. The 

 dendrites may extend indifferently in all directions, or they 

 may lie tangential to the limit-:ins interna. 



The axone may arise from the cell-body, but in many in- 

 stances obser/ed it emerges from the thick base of a dendrite. 

 It passes into the region of the general striatum, bearing 

 short collateral branches along its whole length, and ultimate- 

 ly dividing into a widely spreading arborization between the 

 neurones of the outer levels. Pig. 33 shows the external feat- 

 ures of one of these neurones. 



The internal structure of the neurone is shown in F'ig.*??. 

 The nucleus is seen to fill the greater part of the cell-body. 

 It presents an oval form, and has chromatin disposed in a few 

 relatively large masses, each consisting of a central clot 

 with radiating streamers. There is a single nucleolus. The 

 cytoplasm lies chiefly in the bases of the larger dendrites. 

 Its tigroid-bodies are small in size, few in number, and irreg- 

 ular both in form and distribution. Judf^ing from the struct- 



