220 UNORGANISED FLUIDS. 



fluids ; it will therefore be unnecessary to treat of them at 

 any length. It is to the chemist and physiologist chiefly 

 that the gastric fluid is interesting. They all, however, but 

 especially the gastric and the lacrymal secretions, contain 

 mucous corpuscles and epithelial scales, derived from the des- 

 quamation of the epithelium of the surfaces by which they 

 are secreted, and over which they pass. 



Obs. At page 144. the opinion is attributed to Mr. 

 Addison, that the white corpuscles of blood, mucus, and pus 

 contain filaments, whereas it would appear from a closer ex- 

 amination of the text, that the statement of that gentleman 

 only goes to the extent of asserting, that the fluid inclosed in 

 those corpuscles resolves itself in its escape into the filaments, 

 of which the brinous portions of blood, mucus, and pus are 

 under certain circumstances observed to be constituted. 



