22 



PHYSIOLOGY OF FARM ANIMALS 



[CH. 



lymphatics, besides occurring in parts of the skin in association 

 with sweat glands and hair follicles. 



(4) Nervous Tissues. 

 The minute anatomy of the nervous tissues is most con- 



Fig. 17. MeduUated 

 nerve (after Neale, 

 from Schafer) show- 

 ing nodes of Eanvier, 

 11, where medulla is 

 broken, the axon 

 passing through, a 

 Neurolemma out- 

 side of medulla, 

 (• nucleus and proto- 

 plasm between pri- 

 mitive sheath and 

 medulla. 



