110 INSALIVATION. 



It has been stated that the dog has no sublingual gland ; 

 and Bernard, writing in 1856, said that recently Bider and 

 Schmidt continue to regard the sublingual in the dog as 

 intimately connected with, and inseparable from, the sub- 

 maxillary. This fusion is, however, only apparent as the 

 ducts of the two, which are applied to each other during the 

 greater part of their course, are perfectly distinct. (See 

 Fig. 640 



Fig. 64. 



The saliva may be collected by dividing and even intro- 

 ducing tubes into the various ducts of the krger glands. By 

 such experiments Claude Bernard indicated the watery secre- 

 tions of the parotid as contrasted with that of the submaxil- 

 lary glands, and two distinct kinds of saliva are recognised 

 according to their watery or dense condition. The watery 

 secretion is derived from the labial and buccal glands, as well 

 as the parotids, and all these are large in our herbivorous 

 quadrupeds, especially the horse, who has to live on dry 

 fodder. The muciparous saliva is derived from glands in the 

 palate, the sublingual and submaxillary. 



The salivary glands are not so largely developed in car- 

 nivorous as in herbivorous animals, and in the dog the 

 superior molar glands are represented by the subzygo- 

 matic gland, situated beneath the globe of the eye, and 

 pouring its watery saliva throdgh a tube called the duct 



