144 



C. M. JACKSON 



TABLE 20 



The suprarenal glands; average absolute weight, average percentage of net body-weight 



and range indicated 



DESCRIPTION OP RATS 



absolute weight 

 (and range): grams 



relative weight 

 (and range): 



PER CENT 



Normal at 3 weeks* (Jackson '13) 



Controls at 3 weeks* 



Body-weight constant 3 weeks* (age of 3 to 6 weeks) 



Body-weight constant 5 weeks (age of 3 to 8 weeks) 



Body-weight constant 7 weeks (age of 3 to 10 weelcs) 



Normal at 6 weeks* (Jackson '13) 



Control at 6 weeks 



Body- weight constant 26 weeks (age ot 6 to 32 weeks) 



Normal at 10 weeks (Jackson '13) 



Controls at 10 weeks 



Body-weight constant 25 weeks (age ot 10 to 35 weeks) 

 Controls at 32 and 35 weeks 



0.0072(0 



0.0088(0 



0.0089(0 



0.0109 



0.0088 



0.0101 (0 



0.0117(0 



0.0128 (0 



0.0090 



0.0105 



0.0090 



0.0220 (0, 



0.0253(0 



0.0295(0. 



0.0318(0. 



0.0i49(0. 



0.0145 



0.0270(0. 



0.0320 (0. 



0040-0.0140) 

 0060-0.0108) 

 0070-0.0110) 



0072-0.0126) 

 0090-0.0147) 

 0070-0.0190) 



0150-0.0336) 

 0180-0.0329) 

 02/0-0.0326) 

 0290-0.0346) 

 0147-0.0150) 



0180-0.0310) 

 0280-0.0.360) 



0.0400 



0.0370 



0.0400 



0.0810 



0,0490 



0.0420 



0.0510 



0.0260 



0.0210 



0.0240 



0.0180 



0.0185 



0.0257 



0.0190 



0.0280 



0.0190 



0.020 



0.0100 



0.0200 



(0.023- 

 (0.025- 

 (0.034- 



(0.033- 

 (0.040- 

 (0.015- 



(0.011- 

 (0.017- 

 (0.017- 

 (0.027- 

 (0.017- 



(0.009- 

 (0.017- 



0.074) 

 0.055) 

 0.050) 



0.052) 

 0.061) 

 0.039) 



0.025) 

 •0.033) 

 •0.023) 

 0.031) 

 0.020) 



0.013) 

 0.024) 



* No sexual difference apparent. 



TABLE 21 



The kidneys; average absolute weight, average percentage of net body-weight and range 



indicated 



DESCRIPTION OF R-\.TS 



Normal at 3 weeks (Jackson '13) 



Controls at 3 weeks 



Body-weight constant 3 weeks (age of 3 to 6 weeks) 

 Body-weight constant 5 weeks (age of 3 to 8 weeks) 

 Body-weight constant 7 weeks (age of 3 to 10 weeks) 



Normal at 6 weeks (Jackson '13) 



■ Controls at 6 weeks 



Body-weight constant 26 weeks (age of 6 to 32 weeks) 



Normal at 10 weeks (Jackson '13) 



Controls at 10 weeks* 



Body- weight constant 25 weeks (age of 10 to 35 weeks) 

 Controls at 32 and 35 weeks 



AB.SOLUTE WEIGHT 

 (and range) : GRAMS 



0.271 



0.393 

 0.396 

 0.339 

 0.404 

 0.616 

 0.570 

 0.613 

 0.750 

 1.200 

 0.753 

 1.539 



(0.169 

 (0.314- 

 (0.328- 

 (0.331- 

 (0.325- 

 (0.500- 



-0.531) 

 -0.487) 

 -0.487) 

 -0.347) 

 -0.515) 

 -0.943) 



(0 581-0.645) 



(0.953- 



(0.728- 

 (1.275- 



-1.481) 

 0.784) 

 -1.909) 



RELATIVE WEIGHT 



(AND RANGE) : 



PER CENT 



1.44 (1 

 1.62 (1 



1.80 (1 

 1.89 (1 

 1.69 (1 

 1.25(1 

 1.35 

 1.30 (1 

 1.00 

 0.91 (0 

 0.97 (0 

 0.81 (0 



19-1.87) 

 33-2.16) 

 46-2.05) 

 86-1.92) 

 44-1.97) 

 00-1. 55) 



28-1.33) 



81-0.99) 

 92-1.02) 

 71-0.86) 



* Controls too heavy for comparison. 



