THE ECONOMY OF THE MUSCULAR COVERING. 



69 



illary) jaw bone, Avith the lower nipper {incisor) teeth. Coming to the 

 numerals: 1, is the large portion of the brain, (cerebrum) ; 2, the small 

 brain ( cerebellum) ; 3, the upper portion of the spinal marrow {me- 

 dulla oblongata), where it leaves the small brain; 4, the spinal marrow 

 itself. The capitals show, at .4. the thin bony plates, (turbinated bones) in 



the form of a scroll, which serve to distribute the lining membrane of the 

 nose; B, the cartilaginous division, {septum nasi) between the nostrils; 

 C, C, the lips; D, the tongue; E, the valve of the larynx {epiglottis) ; F, 

 the wind pipe, {trachea) ; G, the gullet {aesophagus) . 



