39* RETROGRADE ABSORBENTS. SECT. XXIX. 8. 



as in the coloured or vinous urine, or that fcented 

 with afparagus, defcribed before. 



2. Whenever the fecretion of any fluid is increaf- 

 ed, there is at the fame time an increafed heat in: 

 the part ; for the feereted fluid; as the bile, did not 

 previoufly exift in the mafs of blood, but a new 

 combination is produced in the gland. Now as fo- 

 lutions are attended with cold, fo combinations are 

 attended with heat ; and it is probable the fum of 

 the heat given out by all the feereted fluids of ani- 

 mal bodies may be the caufe of their general heat 

 above that of the atmofphere. 



Hence the fluids derived from increafed fecretions 

 are readily diftinguiflied from thofe originating from 

 the retrograde motions of the lymphatics :* thus an 

 increafe of heat either in the difeafed parts, or dif- 

 fufed over the whote body, is perceptible, when 

 eopious bilious (tools are confequent to an inflamed 

 liver ; or a copious mucous falivation from the in- 

 flammatory angina. 



3. When any feereted fluid is produced in an un- 

 ufual quantity, and at the fame time the power of 

 abforption is increafed in equal proportion, not only 

 the heat of the gland becomes more intenfe, but 

 the feereted fluid becomes thicker and milder, its 

 thinner and fa line parts being re-abforbed : and 

 thefe are diftinguifhable both by their greater con- 

 fidence, and by therf heat, from the fluids, which 

 are effufed by the retrograde motions of the lym- 

 phatics ; as is obfervable towards the termination of 

 gonorrhoea, catarrh, chincough ? atd in thofe ulcers, 

 which are faid to abound with laudable pus. 



4. When chyle is obferved in (tools, of among 

 the materials ejected by vomit, we may be confi- 

 dent it muft have been brought thither by the re- 

 trograde motions of the ladeals ; for chyle does not 

 previoufly exift amid the contents of the inceftines, 



