Description of Figures. 



b = basement membrane. 

 be = base of the lining epithelial cells. 

 cc = stellate cells containing fibroglia fibrils. 

 mc = elongated cells containing fibroglia fibrils. 

 cf = coarse fibroglia fibrils. 

 ff = fine fibroglia fibrils. 

 luf = collagenous fibrils. 



g = granular protoplasm. 



s = protoplasmic syncytium. 



Fig. 1. A cross-section of a portion of the epithelial and subepithelial layers from 

 the intestine of Necturus. Fixation, Zenker's fluid; stain, Mallory's anilin- 

 blue connective tissue stain; magnification, 800. The fibroglia fibrils and 

 granular protoplasm are red, the nuclei yellow, collagenous fibrUs and 

 mucous in the goblet cells blue, be = lining epithelium ; b = basement 

 membrane of fibroglia fibrils intermixed with a few collagenous fibrils; 

 cc = stellate cell containing fibroglia fibrils; mc = elongated cell containing 

 collagenous fibrils; cf= coarse fibroglia fibril; n>f = collagenous fibrils. 



Fig. 2. A portion of the subepithelial tissue from the intestine of Necturus. 

 Fixation, Zenker's fluid; stain. Van Gieson's connective tissue stain; 

 magnification, 1400. The fibroglia fibrils and granular protoplasm are 

 stained yellow, the nuclei brown, collagenous fibrils red. cc = stellate 

 cell; cf = coarse fibroglia fibril; rof '= collagenous fibrils. The finer cell 

 structure is not brought out well by this stain. 



Fig. 3. Two elongated cells from just beneath the epithelium of the intestine of 

 Necturus. Fixation. Zenker's fluid; stain, Heidenhain's iron-haematoxylin. 

 eosin; magnification, 1400. The fine fibroglia fibrils and the granular pro- 

 toplasm are stained red, coarse fibroglia fibrils and the chromatin of the 

 nuclei black, collagenous fibrils yellowish pink. Most of the fibroglia 

 fibrils in these cells run parallel with the long axis of the cells so that 

 the resemblance to smooth muscle is very striking. The granular proto- 

 plasm of the two cells is continuous, b = basement membrane upon 

 which rests the lining epithelium; ff= fine fibroglia fibrils: cf = coarse 

 fibroglia fibrils; mc = elongated cell with rod-shaped nucleus; bf = coarse 

 fibroglia fibril breaking up into a brush of fine fibrils; wf= collagenous 

 fibrils. 

 Internationale Monatsschrift f. Anat. u. Phys. XXV. 



