188 Journal of the Asiatic Society of Bengal. [N.S., XVIII; 
; 80 fluidin ~ [At 11-30 I clamped the aortic bottle tubing and so 
| : pe op ed on arterial supply, and opened the two 
arts. closed. av. nulae <5 perfused the fluid, lately in 
the sickens ge the r.av. at first at 6 cms. 
and 1°45 ape one drop of urine obtain 
[1° ated 45, l.r.a.v. perfused 747 c.c. ‘and the 
764 c.c.] ]. 
Reverse hea Vas 1 opened the aortic cannula and lowered 
current of the aortic bottle to 9 ems. below the level of the 
30 fluid. heart, and ligatured the post-caval vein, so fore- 
in uid to make its exit from the 
kidneys by the renal arteries, i.e. reversed the 
eurrent; I also raised th r ottles 10 24 
‘48 
— Between 1°45 and 2-15,4 c.c. (!) of 
deen excreted [1 c.c. = = RC (re everse joieied 
[l 45-3 15, 1. r.a.v. perfused 205 e.c.; r. r.a.v. per 
fused 171 c.c. (the flows between 1-0 and 1°30, 
i 8. before the r.a.v. fluid -was compelled to meres 
via the renal ielation; were 215 c.c. and 210 c.c. 
respectively) ]. 
pO rp gm. Nitrogen. 
RC = 6-000140 gm. is 
1 ee. oS fluid = “ 000153 gm. Y 
__ Thus wit e direct Poe current fluid flowi ing through both 
kidneys ight of about 7i) ¢ r 30 minutes (ie. 1/5 of the total 
aortic flow—see Appendix B, Part I) at 25 cm ns. pressure via the be 
ut s 
derably in the intertubular plexus, while in the rena sa afferent vein 
the abet m the veins was much higher than ormal, see the RC 
urine is weaker in nitrogen than the DC urine (vide AhaeG ndix G). 
EXPERIMENT 2. In this experiment I first perfused 0- 8% saline - 
water) + 0-05% urea through the aorta at 24 
The he eart 
in th 
fluid. Both iliac arteries and r.a.v. ligatured. 
; Experiment set going at 10°10 anh first pair tubes 
Arterial put from 10-40-12 
perfusion. 
IL + IR = 1°65 ce. (99 m.) [l ec. = DC}. 
10: 40-12°10 renal arteries perfused about 16) 
o -c. (by an oversight I omitted to note the 
exact quantity). 
