178 DEGLUTITION OR SWALLOWING. 
general habit of very rapidly eating or rather “bolting” the 
meals, There is another evil attendant on this wie at 
wants of the system ; for the sense of hunger is not so readily 
abated by food which has not been prepared for pani 
and thus the feeling of satiety is not produced, until the 
stomach has already received a larger supply than it is well 
able to dispose of, Imperfect mastication of the food is very 
apt to occur, in persons who are losing their teeth by old age 
or decay ; and where these are not replaced by artificial means, 
the next best remedy is to cut the food into very small por: 
tions, before it is taken into the mouth, and to masticate if 
there as thoroughly as possible. 
Deglutition. ‘a 
192. In the Mammalia, the cavity of the mouth is guarded 
behind by a sort of moveable curtain, which is known as the 
veil of the palate (fig. 107); and this hangs down duri 
Veil of the palate 
Nose 
/ 
Pharynx Tongue 
Salivary glands 
Os hyoides 
Larynx 
Thyroid gland 
GEsophagus 
Trachea 
Fig. 107.—Perrenpicutar SEcTIoN oF THE MouTH aND THROAT. 
_ mastication, in such a manner as to prevent any of the fo 0% 
from passing backwards, Titi partition, which does not exist 
