212 NORMAL HISTOLOGY AND ORGANOGRAPHY. 



ated in the floor of the mouth at the side of the fre- 

 num of the tongue in close proximity to its fellow 

 of the other side. The submaxillary gland of the 

 rabbit is a serous gland; that of the dog and cat is 



mucous. 



The accessory 

 salivary glands are 

 numerous small 

 glands of the mouth 

 known according to 

 their location as la- 

 bial, palatine, and 

 lingual. They are 

 mostly glands with 

 mucous secretions. 

 Branched tubular 

 glands with serous 

 secretion occur in 

 the tongue, their 



ducts opening into the depressions of the circumval- 

 late papillae. 



PANCREAS. 



The pancreas is a lobulated compound racemose 

 gland analogous in its structure to the salivary 

 glands. It is situated transversely across the pos- 

 terior wall of the abdomen, so deep in the body and 

 so closely associated with other organs that but 

 little is known of its diseases. Its length varies 

 from six to eight inches, its breadth one and one-half 

 inches and thickness from one-half to one inch. The 

 right extremity, or head, rests in the concavity of 



Fig. 158. A number of alveoli 

 from the submaxillary gland of dog, 

 stained in chrome-silver, showing some 

 of the fine intercellular tubules (Huber). 



