600 Prof. Brodie and Mr. Mackenzie. 



On Changes in the 



Hence 



Mean diameter capsule 87'2 1208 



„ „ glomerulus 86 - 96'0 



Approximate volume capsule 83 220 



„ „ glomerulus 80 111 



fluid 3 109 



Convoluted tubules — 



Proximal. External diameter ... 44 - 42'8 



Lumen 0-0 19-4 



Distal. External diameter ... 25"4 31*8 



Lumen 11-0 2 PS 



grm. 



Weight of E. kidney 77 



L kidney 10-9 



The general changes are in the same direction as before. Perhaps the 

 most marked difference between this and the previous kidneys examined is 

 the large volume of fluid contained within the capsule, and the relatively 

 small size of the glomerulus. Again, we note that there is no change in the 

 external diameter of the proximal convoluted tubule, whereas the distal is 

 extended to 125 per cent, of its resting diameter. As illustrated by the 

 lumina, a very considerable volume of urine is collected within the tubules, 

 particularly in the distal tubule. 



V. Comparison of a Free Kidney with an Obstructed, Kidney. 

 Expt. 6. — L. kidney free. E. kidney obstructed. 



E. L. 

 fi. fi. 



Glomeruli and capsules — 



Hence 





99-6 



110-8 





77-2 



100-0 





6-2 



16-0 





88-4 



105-4 





82-2 



89-4 





86 



146 



„ „ glomerulus 



69 



89 



fluid 



17 



57 



