396 THE SOLIDS. 



manner as that of the stomach would in itself lead to the in- 

 ference that these tubes were present in the upper part of 

 that division of the alimentary canal. 



Messrs. Todd and Bowman figure the tubes as more or less 

 branched previous to their entrance into the follicles, an 

 observation which I can confirm : these gentlemen also thus 

 describe a modification of the follicles and tubes near to 

 the pylorus. " Here, in many of the lower animals which 

 we have examined, for example, in the dog, and it may 

 with probability be inferred, in man also, a change occurs 

 in a very gradual manner, but evidently of an important 

 kind. The membrane is of a paler tint, and its cells 

 seem not to terminate at once in the true stomach cells 

 already described, but are prolonged into much wider cy- 

 lindrical tubes, lined with the same columnar epithelium, 

 and descending nearly or altogether to the deeper surface of 

 the compound membrane. For the most part, these pro- 

 longations of the cells or, as we shall term them, pyloric 

 tubes end, at length, in very short and diminutive true 

 stomach tubes ; but we have likewise found them terminating 

 In either flask-shaped or undilated extremities, lined through- 

 out with the subcolumnar variety of epithelium." 



The stomach tubes are each surrounded by a plexus of 

 vessels. 



FALLOPIAN AND UTERINE TUBES. 



Tubes somewhat similar to those of the stomach exist, ac- 

 cording to the observations of Mr. Bowman, in the mucous 

 membrane of the Fallopian tubes and stomach. 



" The lining membrane of the Fallopian tubes, as well as 

 that of the uterus, is of a compound nature, especially during 

 gestation, and consists of tubules arranged vertically to the 

 general surface. It is to be observed that the cilia only 

 clothe the general surface, and that the epithelium lining the 

 tubules is spheroidal or intermediate between that and the 



