112 



GENERAL ANALYSIS. 



407. WHEN WE WISH TO SEPARATE SUBSTANCES 

 intimately united, our first operation is to grind them 

 finely, and then dissolve them in some fluid, if possible. 



408. FOR THIS PURPOSE the Digestory Apparatus 

 has been furnished with a Mouth, in which the food can 

 be cut, chopped, bruised, ground, or, best name of all, 

 chewed, at the same time that the Salivary Organs pour 

 into the mouth an abundance of fluid. 



409. WHEN SUBSTANCES THAT WE DESIRE TO SEPA- 

 RATE are reduced to a comminuted state and mixed with 

 fluid, we put them into a receptacle where they will be 

 kept warm, and from time to time add such fluids as will 

 favor the process of solution ; and as the substances sepa- 

 rate we remove them. 



410. THE STOMACH is a warm, distensible receptacle, 

 situated as near the mouth as the position of the Lungs 

 and Heart will permit, and on its own account in the 

 very position that is best for it. (See Fig. 70.) 



FIG. 99. .... Fi S- " represents 



a section of the dis- 

 tended Stomach, and, 

 10 to 15, Duodenal 

 portion of 2d Stom- 

 ach ; 1, lower portion 

 of (Esophagus ; 9, 

 Pylorus, that can 

 close tltat outlet; 12, 

 duct or tube from the 

 pancreas. The open- 

 ings of the Gastric 

 Glands are too small 

 to be shown, but they 

 are similar to that of 

 10, Fig. 87, and 3, Fig. 

 103. 



411. THE SIDES OF THE STOMACH ARE FURNISHED 

 with small organs called Gastric Glands, to pour into the 

 Stomach a suitable supply of proper fluid, by which the 

 further solution and preparation of the food is produced. 



407. How do we do ? 408. What furnished ? 

 410. What ? Describe Fig. 99.' 411. How ? 



409. What do with ? 



