'"ft%!. ; 



^'V 



PLATE LXVII. 



*^r 







^QQ>< k*PWpt ^:^/lff 



f 2>-|^ -if (p fe^Sl^Q ? 



^ 



FIG. 146. Transverse section of pyramidal substance of kidney of pig, the blood-vessels of which are injected. 

 a. Large collecting tube, cut across, lined with cylindrical epithelium, b. Branch of collecting tube, cut 

 across, lined with epithelium with shorter cylinders, c and d, Heule's loops cut across, e. Blood-vessels cut 

 across. D. Connective tissue ground-substance, p. 132. 



Fu;. 147. Teased preparation from a section of kidney of pig, hardened in bichromate of potash, showing a 

 Benin's loop. a. Membrana propria. b. Epithelium. 



Fie. 148. The same, showing a portion of a collecting tube in the pyramidal processes of the corticalis. A. 

 shows the lumen of the tube: b, the membrana pn.pria : a, the cylindrical epithelium, p. 132. (Oc., 3.) 



Fl(J. 149. Socti.in of (-.irtiual substance of kidney of human fcetus, hardened in bichromate of potash. 

 a. Glomerulus with (ft) its nu-tnbruna jini/n-in ; and c, the epithelium of polyhedric cells covering the glome- 

 rulus. This epithelium is continuous with rf, the flattened epithelium which lies upon the inner surface of 

 the Bowman's capsule, c. /. Convoluted urinary tube cut across, p. 132. (Set also fig, 155.) 



