528 
Miller and Carlton—The Cat’s Kidney. 
The average for the four kidneys is .701 per cent. The aver¬ 
age volume of twelve pair of kidneys by displacement was 12.9 cc. 
for both right and left kidneys. The truth is probably nearer 
.700 than .690 because by the displacement method fractions of 
a cc. were not noted. 
Table I. Cat 1. 
Left kidnev. Volume by displacement in water, 7.5 cc. Length of 
long axis, 30 mm. The volume of the right kidney was 6.5 cc. The vol¬ 
ume of the cortex of the L ft kidney by displacement was 4.5 cc. and the 
volume of medulla 3.0 cc. 
Sec¬ 
tion. 
Line. 
Thick¬ 
ness. 
Entire 
area. 
Area 
me¬ 
dulla. 
Area 
cortex. 
Thick¬ 
ness 
of me¬ 
dulla. 
A. 
Entire 
volume 
of 
kidney. 
B. | 
Entire 
volume 
of 
kidney. 
1 A. 
i ! 
Volume 
of me¬ 
dulla. 
B. 
Volume 
of me 
dulla. 
1 
1 
5 mm. 
.015 
.004 
.011 
1 mm. 
.375 
.750 
.020 
040 
2 
1 
5 mm. 
.017 
.004 
.013 
5 mm. 
1.050 
1.250 
.500 
.800 
3 
2 
6 mm. 
.025 
.016 
090-.010 
6 mm. 
1.650 
1.800 
.9225 
.960 
4 
3 
7 mm. 
.030 
.01475 
.0615 
L 
7 mm. 
1.610 
2.100 
.69125 
1.0325 
5 
4 
7 mm. 
.016 
.005 
.011 
3.25mm 
.560 
1.120 
.08125 
.1625 
Total .. 
5.245 
7.020 
2.2150 
| 2.9950 
Mean .. 
6.1325 cc. 
2.605 cc. 
