39^ Journal of Comparative Neurology. 



description of figures, 

 plate xxvi. 



Fig. I, Surface preparation of part of the intermuscular plexus of the 

 oesophagus of a young cat. Stained in methylene blue and fixed in ammonium 

 picrate. Sketched with the aid of the camera lucida under 2^3 in. objective and 

 2 in. ocular. Reduced to «^. 



Fig. 2, A. Surface preparation of one of the ganglia from Fig. i. 

 Sketched under i/^ in. objective and 2 in. ocular with the aid of the camera 

 lucida. Reduced to i^. a. — sympathetic fiber passing through ganglion ; s.s. 

 — sensory cerebro-spinal fibers passing through ganglion ; 7n.m. — sensory sym- 

 pathetic cells ; c.c.c. — motor sympathetic cells surrounded by end-baskets of 

 white rami fibers; p. — preganglionic fiber. 



Fig. 2., B. Surface preparation of ganglion from intermuscular plexus of 

 rabbit. Stained in methylene blue, fixed in ammonium picrate. Cells imper- 

 fectly stained, but end-baskets of preganglionic fibers showing very distinctly. 

 Drawn with the aid of the camera lucida, under i/^ in. objective and 2 in. eye- 

 piece. Lettering same as in A. 



Fig 3. Surface preparation of submucosa and muscularis mucosas of 

 young cat. Stained in methylene blue and fixed in ammonium picrate Drawn 

 with the aid of the camera lucida, under ^ in. objective, 2 in. eye-piece. Re- 

 duced to i^. / — intramuscular plexus ; s.s.s. — sensory sympathetic nerve cells; 

 t. — nerve trunk of submucous plexus ; no type I cells are seen in this part 

 of the plexus. 



Fig. ^. Surface preparation of small ganglion from lower part of subniucous 

 plexus of oesophagus of cat. Stained in methylene blue and fixed in ammonium 

 picrate. Drawn with the aid of the camera lucida under ]/(, in. objective and 

 2 in. eye piece. Reduced to y^. c, — type I cell, surrounded by end-basket of 

 preganglionic fiber; /. — preganglionic fiber; m.m. — sensory sympathetic cells; 

 s. — sensory cerebro-spinal fiber passing through ganglion ; a. — non-medullated 

 sympathetic fiber passing through ganglion. 



Fig- 5- Tangential section of part of the mucosa of a young cat. Stained 

 in methylene blue and fixed in ammonium molybdate after prefixation for 15 

 minutes in ammonium picrate. Section about 80 // in thickness. Drawn with 

 the camera lucida, under 14 in- objective and 2 in. eye-piece. Reduced to ^. 

 Shows the end branching of a large, medullaled sensory nerve in the mucosa 

 with the telodendria in the epithelium. 



Ftg. 6. Surface preparation of one of the end-balls in the upper part of 

 the oesophagus of a cat. Stained in methylene blue and fixed in ammonium 

 picrate. Drawn with the aid of the camera lucida under ^ in. objective and 

 2 in. ocular. Reduced to 1^. Shows medullated nerves, with short med- 

 ullated and non-medullated branches and telodendria closely crowded together. 



Fig. 7. Section through epithelium and part of mucosa of young cat. 

 Stained in methylene blue, fixed for 15 minutes in ammonium picrate and after- 

 wards for 12 hours in ammonium molybdate. Drawn with camera lucida, under 

 I-I2 in. oil immersion objective and 2 in. ocular. Reduced to %. Shows med- 

 ullated sensory fibers, subepithelial plexus, and terminal arborization in the 

 epithelium. 



Fig. 8. Section through end-ball similar to that in Fig. 6. Preparation 

 prepared and sketched as in Fig. 7. Shows the rich terminal arborization in 

 epithelium. 



