OP THE GLANDS. 317 



We have already stated, that among the follicles some were 

 simple and solitary, others are grouped, collected or aggre- 

 gated, others again are composed either by their reunion in a 

 common orifice or lacuna, or at the same time by the agglo- 

 meration of several follicles, or finally by a common and rami- 

 fied excretory canal. Here a difficulty presents itself, for 

 there is no good reason why the amygdales which have com- 

 pound lacunae, the molar glands, the prostate and Cowper's 

 glands, which have ramified ducts, should not be classed 

 among the glands, as well as the sublingual, the lachrymal 

 glands, &c. 



The most perfect and least equivocal glands are: the lachry- 

 mal, the salivary, three in number on each side, viz. the pa- 

 rotid, the maxillary and sublingual ; the pancreas, the liver r 

 the kidneys, the testicles and mammae. The ovaries like the 

 testicles must be classed with this kind of organs. 



481. The form of the glands is irregularly round, and 

 present a great variety. Some are single, like the liver and 

 pancreas, not symmetrical; others are double and very nearly 

 alike on both sides. 



482. They are all situated at the trunk, and all, whatever 

 may be the apparent diversity of their situation, terminate by 

 their ducts in the mucous membrane or in the skin. 



483. Their size differs greatly: the liver is one of the 

 most voluminous organs of the body, and on the other hand, 

 the lachrymal and sublingual glands and the ovaries are 

 scarcely half the size of the thumb. 



484. In their interior, some are lobed and lobulated like 

 the lachrymal and salivary glands and the pancreas; the mam- 

 ma3 are less distinctly so; the testicles are so in another man- 

 ner; the kidneys are only so in the foetus; the liver is only 

 lobed externally. 



In the former, the lobules seem to be formed of very small 

 particles, but similar and whitish; in the liver and kidneys, 

 we find two substances of different colour, arranged in layers 

 in the kidneys, and mixed in the manner of fine granite in the 

 liver. 



485. The greater number of glands are enveloped with a 



