DIGESTION IN THE MOUTH. 281 



In the Dog. 



Water, 994.4 



Solids, 5.6 



Organic matter, 1.75 



Mucin 0.66 



Soluble ash 3.59 



Insoluble ash 0.26 



Carbonic acid in combination, 0.44 



The submaxiljary saliva of other animals has been less studied than 

 in the dog; that of the rabbit, according to Heidenhain, is clear, not 

 viscid, and alkaline. It does not become turbid when exposed to the 

 atmosphere, contains albuminoids, but no mucin or ptyalin. It contains 

 1.23 per cent, of solids. The submaxillary saliva of the sheep is 

 strongly alkaline and slightly viscid. The first few drops are turbid, 

 but it then becomes limpid, to again become turbid when exposed to the 



FIG. 117. PAROTID AXD SUBMAXII/LARY FISTULA IN THE HORSE, AFTER 



COLIN. (Thanhoffer and Tormay.) 

 K Kf, rubber bulbs for collecting saliva; PS, cannula in the parotid duct. 



atmosphere; it contains considerable quantities of albuminoids and a 

 variable amount of mucin, but always less than in the saliA~a of the dog. 

 The submaxillary saliva of the pig contains no ptj'alin. The saliva of 

 the calf and other herbivora, with the exception of the rabbit, is said 

 to be rich in ptyalin. In the submaxillary saliva are found the so-called 

 morphological elements or salivary corpuscles, which appear to be identical 

 with the white blood-corpuscles and possess amoeboid movements. 



