190 Journal of the Asiatic Society of Bengal. [N.S., XVIII, 
made in each for escape of fluid. During the 
d part of the experiment the left kidney 
xperiment set going at 10°50, both ureters excret- 
ing freely. Put lst pair tubes from 11°30-12°0. 
Artery 
perfusion IL = 5-0 c.c. 30 [1 ec. = DCIL] 
in both IR = 26 cc. °9™-) flee. = DCIR] 
kidneys. 
11-30-12°0 bottle perfused 110 c.c. = 18°3¢.c. per 
5 minutes. 
At 12-01 inserted the cannula of the right kidney 
int e al vein and ligatured and slit the 
perfusion was 28:3 c.c. per 5 minutes, i.e. one- 
third faster than during the first part of the 
experiment. 
Artery Between 12°39 and 12-58 I had collected 
pe usion 
in left kidney ; from left kidney 4°75 v.c. (28 m.) [1 c.c. = DCIIL] 
enous from tie right kidney 31-8 c.c. (28 m.) [lee. = RCITR} 
usion 
in right Thus the reverse current in the right kidney 
kidney. produced 6°6 times as much! urine as the direct 
: : i 
owing to the cannula having a larger orifice). 
= 0°000546 gm. Nitrogen. 
DCR  =0-000373em.__,. 
DCTIL = 0°000693 gm. 
RCIIR (1)? = 0000453 gin. res 
RCTIR (2)3 = 0-000546 gm. 

' Both kidneys had had all nerve connections severed so that this 
factor, as regards quantity of urine, was absent. All the renal nerves 
in the frog experiments, on the other hand, were left intact. 
Another objection whic ay be urged against these experiments 
e 
excretion of the vein-perfused kidney in these experiments should still 
have been less instead of 
DQ 
5 
3 
g 
S 
gg 
et 
° 
= 
fe) 
: & 
fa) 
g 
: 
= 
Lox J 
oO 
5 
ct 
the serum only contained 0:15%, i i con 
t ©, so that in my experiments absorptio 
should certainly have occurred on the neo-Ludwig view. 
: minutes. 
* Second sample taken during the first four minutes. 


