436 BIOLOGY. 



If there is a deficiency of dephlegmatizing and deoxy- 

 dizing aliments, then the peroxydation of the stomach 

 must produce a feeling called appetite. If this be not 

 appeased, the oxy genie tension in the stomach is elevated 

 or increased, and then begins to become unpleasant ; 

 this is Hunger. 



2622. Here the feeling of the stomach's peroxydation 

 is an obstructed process of fermentation, dependent upon 

 want of food and alkaline principles. 



Thirst. 



2623. The feeling of the reverse condition to the 

 above is Thirst. It originates through a too rapid deoxy- 

 dation of the stomach, through deglutition of the gastric 

 juice on account of an excess of food. But it may also 

 originate from a deficiency of gastric juice, or from an 

 alkaline tendency in the latter ; just as hunger resulted 

 from a superabundance of gastric juice, or a disposition 

 to form acids. 



2624. Thirst is the feeling of too powerful a digestion, 

 or of too rapid fermentation, whereby the product or 

 leaven of the latter becomes, as it were, bankrupt ; upon 

 this the blood flows in greater quantity, in order to se- 

 crete the gastric juice ; the arterial nature becomes ele- 

 vated, and finally, an inflammatory condition, associated 

 with a sense of dryness, originates, and is propagated as 

 far as the mouth. 



2625. Thirst and heat rank, like hunger and cold, 

 parallel to each other. The feeling of dryness appears 

 as heat, that of moisture, as cold. Cold therefore at 

 once extinguishes or quenches the thirst ; but produces 

 hunger, which again is mitigated by heat. 



Biliary Digestion. 



2626. The stomach is the pulmonic intestine; the 

 duodenum, through its combination with the liver, is the 

 vascular intestine, having a predominant venous charac- 

 ter; or the one is the arteriose, the other the venous 

 stomach. 



