OUTLINE OF THE STRUCTURE 01 THE HORSE. 



49 



surface of the skin. The exhalants throw out fluids to the 

 surface : an oily matter, to lubricate the skin and keep it 

 soft and pliant; and moisture — a not inconsiderable quan- 

 tity of water — whose purpose, although not clearly demon- 

 strated, is probably to dilute and accelerate the flow of the 

 unctuous secretions. 



THE BRAIN AND NERVOUS SYSTEM. 



SECTIONAL VIEW OF THE HEAD. 



The cut represents a section of the head, and shows not 

 only the location of the difi^erent parts of the brain, with the 

 cranial bones, which inclose it, but also gives the anatomy 

 of that entire member, and of the neck. It will be found 

 exceedingly useful for reference, in connection with several 

 other sections of this work. 



a The nasal bone, or bone of the nose. 



b The frontal bone. The cavities or cells beneath are called the frontal sin- 

 uses. 

 c The crest or ridge of the parietal bones. 



d The tentorium, or bony separation between the cerebrum and cerebellum. 

 e The occipital bone. 



^^ 



