LESSON XXXVIII. 



ON CONCOCTION. 

 -The concoctivc powers, with various ait, 



Subdue the cruder aliments to chyle ; 



The chyle to blood ; the foamy purple tide 



To liquors, which thro' finer arteries 



To different parts their winding course pursue. 



AKMSTKONG. 



AMONG all the wise contrivances observed in 

 the human fabric, none can excite our attention 

 and admiration more than the disposition and me- 

 chanism of those parts, by which our aliment is 

 concocted, or fitted for our daily support and nou- 

 rishment. 



To have a clear idea of the manner in which 

 Concoction is performed, we must distinguish it 

 into three stages : the first of which is performed 

 in the progress of the aliment from the mouth 

 down to the lacteals; which are vessels that receive 

 the chyle from the intestines ; the second is per- 

 formed in the passage of the milky liquor called 

 chyle, through the lacteal vessels to the loins, and 

 then up under the collar bone, where it mingles 

 with the blood : the third, or ultimate stage of 

 Concoction, is performed by the. circulation of 

 the blood and chyle together through the lungs, 

 and the whole arterial system. In all these stages 



the 



