EXPLANATION OF THE PLATES. 



PLATE L. 



Fig. 1. Follicles of the stomach as they appear when lined 

 with conoidal epithelium. 100 diameters. 



Fig. 2. Ditto of large intestine in a similar condition. 



Fig. 3. Cross section of stomach tubes, magnified 100 dia- 

 meters. The tubes are parcelled uot into sets only 

 when about to pierce the follicles into which they 

 open ; and it is rare to get a good view of them 

 thus disposed in bundles, each of which corresponds 

 to the base of a follicle. 



Fig. 4. Longitudinal view of stomach tubes, magnified 220 

 diameters, showing the spheroidal or glandular epi- 

 thelium with which they are lined, as well as the 

 dilated extremities in which they terminate. 



Fig. 5. Ditto, magnified 100 diameters. 



Fig. 6. Follicles of the large intestine without epithelium, 

 and cut off, so as to admit the passage of light 

 through them when not thus shortened, their 

 apertures appear dark, in consequence of the non- 

 transmission of the light. 60 diameters. 



Fig. 7. Terminations of the follicles of the large intestine. 

 Magnified 60 diameters. 



