14 THE SECRETIONS: 



Sulphocyanogen a trace 



Mucus with a trace of ptyalin 



Lactates . -j Potash 



Muriates * s 1a - I l ' 9 



1 roiasii 



I Soda . 

 J Lime . 



Phosphates 



Bilious saliva. 



Water 



Ptyalin 



Fatty matter and fatty acid 



Biliary matter 



Cholesterin 



Albumen with soda, and 



albuminate of soda 



~l 

 J 



Mucus . 1>6 



Carbonates . -> Potash -i 



Muriates I Soda . 2-3 ] 



Phosphates . J Lime . 



Saliva of animals. 



I have analysed the saliva of a horse suffering from ozsena. 

 Professor Hertwig kindly assisted me in exposing Steno's 

 duct ; and, in the course of eight hours, (during which 

 time the horse was feeding,) about five ounces of saliva were 

 collected from the opened duct. The fluid was viscid, of a 

 faintly yellow colour, devoid of odour, alkaline in its reaction, 

 and possessed a specific gravity of 1006. (Schultz 1 collected in 

 a similar manner 55 ounces 7 drachms of saliva from a horse 

 in the course of twenty-four hours.) After some time, the 

 saliva deposited a white sediment, consisting of irregular mem- 

 branous shreds and saliva-corpuscles. On the application of 

 heat it became turbid. A copious precipitate was thrown down 

 on the addition of acetic, dilute sulphuric, or lactic acid ; and 

 on evaporation it became covered with a film of coagulated 

 casein. Perchloride of iron produced a vivid red colour, and a 

 slight precipitate. It contained a larger amount of solid con- 

 stituents than human saliva, and a very considerable quantity 

 of casein, part of which coagulated on evaporation, and part 

 was thrown down by acetic acid; in this manner it was sepa- 



1 De Alimentor. concoctione. Berol. 1834. 



