1912] On the Distribution of Potassium in Renal Cells 407 



Fig. 12. Kidney tubules, dog, A.C.E. anaesthesia; 0.5 grm. phloridzin 

 in 10 c.c. of a I per cent. NaCl solution was injected into 

 external jugular; kidney excised as soon as urine showed 

 glycosuria condition. X 820. 



Fig. 13. a and h. Tubule of Henle's loop and convoluted tubule respec- 

 tively, rabbit, pithed, and kidney immediately excised during 

 slight A.C.E. anaesthesia. X 820. 



Fig. 14. a and h. Tubule of Henle's loop and convoluted tubule respec- 

 tively from rabbit from which preparation giving Fig. 13 was 

 taken. Kidney excised 45 minutes after cord was cut; blood 

 pressure 30 mm. Hg. 24 minutes before excision 4.5 grms. 

 dextrose in warm water were injected into the internal jugular 

 vein. X 820. 



Fig. 15. Tubule of Henle's loop, cat, normal condition. X 820. 



^ig. 16. Convoluted tubule, pigeon, normal condition. X 820. 



>""ig. 17. Kidney tubule, foetal kitten. X 820. 



Fig. 18. Kidney tubule, Necturus; gastric digestion active, animal kept 

 in cold aquarium. X 820. 



Fig. 19. Glomerulus, dog, from same animal indicated in the case of 

 Fig. 12. X 540. 



Fig. 20. Bowman's capsule, frog, from same specimen as in the case of 

 Fig. 8. X 540. 



Fig. 21. a and b. Kidney tubule, dog; a, surface view; h deeper view 

 of same. X 820. 



