ILLUSTRATIONS 



335 



Figure 23.- — The chief nonvisual afferent connections of the ventrolateral peduncular 

 neuropil (chap, iii) seen as projected upon the median section. Most of these fibers are un- 

 myelinated, of thin or medium size. The visceral-gustatory system has more fibers than any 

 of the others. 



Figure 2!^. — Diagrammatic thick transverse section through the middle of the optic tectum 

 and the oculomotor nucleus, illustrating typical connections between the tectum and the 



23 



cerebral peduncle. The gray is outlined by a broken line, and the ventral border of the tectum 

 by dotted lines. On the right side a typical neuron of the peduncle is drawn, with axon entering 

 the ventral tegmental fascicles (f.r.t.). Four outlying cell bodies are seen at the border of the 

 ventrolateral peduncular neuropil (a.rl.p.). On the left side is a neuron of the oculomotor 

 nucleus, the dendrites of which connect with terminals of the basal optic tract in the ventro- 

 lateral neuropil. Compare figure 93. 



Figures 25 to J6.— These semidiagrammatic drawings are made from sections selected from 

 a horizontal series of the adult brain prepared by P. S. McKibben, Cajal's reduced silver meth- 

 od after fixation in alcohol. X 35. For approximiite planes of section see figure 2B. The sections 

 are exactly horizontal right and left. 



