FURNITURE, AND ITS USES. 209 



The kidney, however, is not so good a spe- 

 cimen of the nature of a gland as the liver 

 would be. The larger glands of the human 

 body are the liver, the spleen, the pancreas, 

 the salivary glands, the lachrymal glands, &c. 

 Besides these, there are small glands almost 

 innumerable. The cerumen of the ear, and 

 the oil of the skin, of which I have already 

 spoken, are secreted by little glands. 



The lymphatic or absorbent vessels are eve- 

 rywhere connected, in their passage through 

 the body, with little glands. Some of these 

 are larger, some smaller ; and most of them 

 are very small indeed. Those little swellings 

 called kernels : which sometimes appear in the 

 armpit or groin, or in the sides of the neck, are 

 nothing but inflamed lymphatic glands. 



All these glands, (except the lymphatic 

 glands, whose use is unknown,) secrete some- 

 thing ; and the material for secreting anything 

 from is the blood, sent to them from the heart, 

 into their ten thousand little vessels. 



NATURE OF SECRETION. I have already 

 observed that some of the liquids, &c. of the 



18* 



