CHAP. I.] ITS CAUSES TRACED. 263 



spiration thereby : and the feverish heat of the 

 body occasioned by high living and indolence, in 

 time exhausts the whole supply of the aequeous se- 

 cretion. So much is this the case, that the animal's 

 discharge of urine becomes less and less as its se- 

 clusion is continued, until the decided access of 

 fever takes place, and we notice its colour is higher 

 and higher as its quantity decreases. [Look again 

 at section 55, page 150.] As before explained, 

 the secretion of mucous matter takes place within 

 the guts, &c, or that surface which is next to the 

 food ; on the other side, and every other part 

 of the animal system, the watery secretion des- 

 tined to lubricate the parts, to keep them supple 

 and to prevent adhesion, takes place. On that side 

 (which is popularly considered the outer surface !) 

 good quantities of fat accrue, all along the whole 

 length of the intestines, which is usually scraped 

 from slain beasts, and preserved as tallow. From 

 this source is derived that access of grease, which, 

 as I have said, is greatest as the inflammatory 

 symptoms may be higher. When this has long 

 been the case, and stools are at length procured, a 

 long thin wormlike portion of this fat comes away 

 with the dung; which would be of itself a suffici- 

 ently alarming appearance, though wanting anima- 

 tion, but for the well-known, but inexplicable 

 doctrine of effusion, or communication through 

 the gut : this appearance, then, of a long tena- 

 cious fatty portion of thin membrane, which usually 

 accompanies molten grease, should be considered 

 6 



