EXPLANATION OF PLATE. 



FIG. 1. Vertical section of epithelial cells lining the cavity of the stomach of a fasting 

 cat. (Semi-schematic). Reduced from a caméra drawing. The cells are seen united througb. 

 out their whole length by cell bridges that stretch across tbe intervening lymph spaces. 



k. Appearance and position of cément net that cuts off the lymph spaces from the 

 cavity of the stomach-. 



f. Slight condensation of the subjacent connective tissue to which the cells are 

 attached. 



a, b, c, d, e, indicate the levels at which figs. 2, 3, 4, 6 and 7 hâve been taken. 



FIG. 2. A somewhat oblique section through the surface epithelium of the stomach 

 of a fasting cat ; shovving the inter-cellular bridges. Obj. oil imm. 1/12 and oc. compen. 

 Leitz (Caméra lucida). 



a. T. S. Cell body just below the cément net; the central clear areas contain 

 mucigen. 



b. T. S. Cell body at level of base of mucigen cup. 



c. T. S. Cell body at level between mucigen cup and nucleus. 



d. T. S. Cell body at level of nucleus. 



FIG. 3. Transverse section of surface epithelial cells of stomach of fasting cat, at a 

 level between a. and b. in fig. 1. Obj. oil imm. 1/12 and Oc. compen. Leitz (Caméra lucida). 



FIG. 4. Transverse section of epithelial cells lining the surface of the stomach of a 

 fasting cat, at a level e. below the nucleus. The cell bodies are very small, the bridges long 

 and slender. (Semi-schematic.) 



FIG. 5. Photograph of an oblique section through the epithelium lining the surface 

 of the stomach of a fasting cat. 900. 



FIG. 6. Photograph of a transverse section through the epitheliun lining the surface 

 of the stomach of a fasting cat. 900. 



FIG. 7. Photograph of a transverse section through the epithelial cells lining the 

 surface of the stomach of a fasting cat, at level e. 900. 



FIG. 8. Photograph at a level a little below that of fig. 7. Showing a leucocyte in 

 process of migration through the epithelium. 900. 



FIG. 9. Photograph of a tangential section through the epithelium covering a villus 

 of the small intestine of a cat ; showing transverse sections of the cells at various levels and 

 the inter-cellular bridges by which they are connected together, 900. 



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