344 DETAILED SYNTHESIS. 



1023. THE SALIVA FORMED BY THE PAROTID is very 

 watery, and apparently of chief use in moistening the 

 mouth and dissolving the masticated food. It flows 

 most freely when the jaws are active, in speaking, and 

 particularly in chewing, etc., the pressure of the mus- 

 cles 'being so many hearts to move Blood through the 

 glands. 



1024. Remark. THE PAROTID GLAND, IN A MOST REMARKABLE MAN- 

 NER, SHOWS the influence of the mind upon secretion, since the mere 

 thinking of desired food makes the mouth water, and the relish of food ' 

 increases the flow of the saliva, useful hi digesting it. 



1025. Inf. A GOOD APPETITE, desired and well-chewed food, are 

 great promoters of digestion, by reason of the increased flow of saliva 

 they cause. 



1026. THE SUB-MAXTLLAKY GLAND (, Fig. 50) is a 

 small racemose organ beneath the side of the tongue, 

 constructed much like the parotid on a small scale, yet 

 differing from it somewhat. A small duct from it opens 

 beneath the bridle of the tongue. 



1027. THE FLUID OF THE SUB-MAXILLARY is more 

 viscid than that of the parotid, and flows chiefly while 

 eating, seeming to be of especial use in digesting food. 



1028. THE SUB-LINGUAL is the smallest of the three, 

 lies under the side of the front part of the tongue, pours 

 out its fluid through several minute tubes, and seems to 

 merely another sub-maxillary. (#, Fig. 50). 



1029. THE AMYGDALOID GLANDS, or tonsils, are two 

 almond-shaped bodies, situated in each side of the back 

 part of the mouth. They exhibit many pits, in the 

 bottom and sides of which mucous glands open. Thus 

 the Amygdaloid are merely clusters of mucous glands. 

 (PI. 30.) 



1030. THE USE OF THE TONSILS is to pour out mucus 

 and lubricate the food forced between them as it is being 

 swallowed. 



1023. What is ? 1024. What does ? 102C. What is ? 1027. What said 

 of? 1028. What is ? 1029. What are ? 1080. What is ? 



