1G6 OF GLANDS, 



sentient nerves, such however are only to be fonnd within 

 the cranium, or spinal canal. All those distributed over 

 the body are of a mixed character ; that is, the sentient 

 and motor are mingled together. 



SECTION XIII. 



OF GLANDS. 



Glands are vascular secretory bodies distributed over the 

 animal frame. They are of various sizes ; some being very 

 large, as the liver, and others small, as those whose secre- 

 tions lubricate certain portions of the skin, and are called 

 sebaceous. Their figures are varied, and their situation un- 

 determined ; some being deep-seated, or within cavities, 

 while others are altogether superficial. Glands are divided 

 into glohate, and conglomerate ; they likewise receive indi- 

 vidual names, according to their office, as ladwymal, sali- 

 vary, &c. The follicular are but small glandular bodies, 

 larger glands being composed of a number of follicles ; and 

 are variously disposed, appearing either as sebaceous or 

 mucous. The sebaceous are situated near the surface of 

 the body, and produce a semi-solid substance resembling 

 suet ; which serves to facilitate motion, or to prevent friction. 

 Mucous glands are usually situated in cavities and canals ; 

 as those of the nostrils, fauces, and urethra ; but in many 

 instances they are not very evident, and the perspiratory 

 may be viewed as a kind of altered mucous gland. Both 

 sebaceous and mucous glands are very small, often con- 

 sisting of a blind sac, with a duct. 



Globate glands are oval vascular bodies, receiving lym- 

 phatic vessels at one side, and permitting the exit of the 

 same lymphatics, though less in number, at the other ; 

 but these glands are destitute of any excretory trunk, and 

 are peculiar to the lymphatic system. 



A conglomerate gland is a body composed of several dis- 

 tinct parts, or lobuli, having numerous excretory ducts ; 

 which may unite to form one trunk common to the whole : 

 instances occur in the parotid and pancreas, the liver and the 

 kidneys. The glands of young subjects are larger than 



