OF THE SALIVA AND TEARS. SECT. XXiV. t 



SECT. XXIV. 



OF TrfE SECRETIONS OF SALIVA, AND OF TEARS, 

 AND OF THE LACRYMAL SACK. 



I. Secretion of fdl'rva increafed by mercury in the 

 blood* i. By the food in the mouth. Drynefs of the 

 mouth not from a deficiency of /diva. 2 By fenfiti've 

 ideas. 3. By volition. 4. By di ft aft ef ul fiib fiances* 

 It is fe crete d In a dilute and f aline ft ate. It then be- 

 comes more vifcid. c. By ideas of d$afteful fub- 

 ftances. 6. By naufea. 7. By aver/ton. 8. By 

 catenation with Stimulating fubftances in the ear. 

 IL i. Secretion of tears lefs injleep. From ftimula- 

 iion of their excretory duel:. 2. Lacrymal fack is a 

 gland. 3. Its ufes. 4. fears arefecreted when the 

 nafal dud is ftimulated. 5. Or when it is excited 

 by fenfation. 6. Or by volition, j. T/JC lacrymal 

 fack can regurgitate its contents into the eye* 8. More 

 tears are fecreted by ajjociation with the irritation of 

 the nafal duel f the la:rymal fuck, than the puncla 

 lacrymalia can imbibe. Of the gout in the liver and 

 Jiomach. 



I. THE falival glands drink up a certain fluid 

 from the circumfluent blood, and pour it into the 

 mouth. r l hey are fometimes ftimulated into a&ion. 

 by the blood, that furrounds their origin, or by fome 

 part of that heterogeneous fluid : for when mercurial 

 falts, or oxydes, are mixed with the blood, they fti- 

 mulate thefe glands into unnatural exertions; and 

 then an unufual quantity of faliva is feparated. 



As the faliva fecreted by thefe glands is mod 

 wanted during the maftication of our food, it hap- 

 pens, when the terminations of their du6ts in the 

 mouth are ftimulated into adion, the falival glands 



themfelves 



