SALIVA OF THE SHEEP. 15 



rated from the ptyalin. 1000 parts of this saliva were com- 

 posed of: 



Analysis 60. 



Water .... 982-000 



Solid constituents . . . 18-000 



Fat containing cholesterin -120 



Ptyalin with extractive matters 



Casein 



Albumen 



Extractive matters and salts 



4-442 



5-422 



601 



7-178 



Saliva of the dog. 



The saliva of a healthy dog was collected by exposing Steno's 

 duct, and examined by Gmelin and Tiedemann. It was rather 

 turbid, of a pale yellowish-white colour, thick, capable of being 

 drawn out in threads like albumen, alkaline in its reaction, 

 and 1000 parts left, on evaporation, a solid residue of 25-8, 

 consisting of a little extractive matter soluble in alcohol, an 

 average quantity of ptyalin, mucus, a very large amount of chlo- 

 ride of sodium, together with alkaline carbonates, acetates, sul- 

 phates, and phosphates, and a little phosphate and carbonate 

 of lime. 



Saliva of the sheep. 



Gmelin and Tiedemann succeeded in collecting between three 

 and four ounces of saliva in the course of fifteen hours from 

 the stenonian duct of a sheep. It was of a reddish tint, in 

 consequence of being mixed with a little blood, perfectly fluid, 

 faintly alkaline, and of a slightly saline taste. 1000 parts of 

 the saliva contained : 



Water ..... 989-0 



Extract of flesh, an organic matter with which chloride of 



sodium crystallized in octohedra, chloride of sodium, and a 



little sulphocyanide of sodium . . . I'l 



A little ptyalin, with a good deal of phosphate and carbonate 



of soda, and chloride of sodium ... 8-2 



Mucus or albumen, with a little phosphate and carbonate of 



potash . . . . '5 



