Note on the influence of castration on the weight of the brain and spinal cord in the albino rat and on the percentage of water in them / Henry H. Donaldson and S. Hatai.

  • Donaldson, Henry Herbert, 1857-1938.
Date:
1911
Catalogue details

Licence: In copyright

Credit: Note on the influence of castration on the weight of the brain and spinal cord in the albino rat and on the percentage of water in them / Henry H. Donaldson and S. Hatai. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    In this group therefore the castrated have slightly lighter brains and spinal cords than the controls, while the percentage of water for the brain and spinal cord is nearly the same in both groups. The data for the second group of animals from this series are given in table 2. TABLE 2 Rats losing in body weight at time of killing LITTER BODY BODY BRAIN CORD PER CENT WATER AGE WEIGHT LENGTH WEIGHT WEIGHT 1 BRAIN CORD DAYS Castrated I 225.8 206 1.8990 .6242 77.17 68.11 292 I 234.0 196 1.9994 .6470 77.17 69.40 292 I 223.4 193 1.8816 .6191 77.36 69.22 292 VI 233.2 194 2.0144 .6546 77.99 68.44 271 VI 190.8 199 1.9232 .6436 77.23 68.42 271 VIII 144.6 192 1.9789 .6374 77.53 68.37 242 VIII 212.0 192 1.9838 .6309 77.60 68.67 242 VII 156.6 187 1.6538 .5174 77.22 68.38 271 VII 144.8 185 1.8164 .5580 77.59 70.03 271 VII 122.1 176 1.7514 .5500 77.93 68.76 271 Average.. 188.7 192 1.8902 .6182 77.48 68.77 271 Controls I 230.0 193 2.0426 .6245 77.39 69,09 292 I 230.0 195 1.9350 .6434 77.34 69.07 292 I 226.0 194 1.9624 .6384 77.67 69.32 292 VII 164.4 190 1.8718 .5872 77.62 69.07 271 VIII 261.8 206 2.0474 .6730 77.49 67.51 242 VIII 152.0 188 1.9634 .6464 77.77 68.77 242 Average.. 210.7 194 1.9704 .6355 77.54 68.80 272 In this case, although the absolute values are somewhat dif- ferent, the relations for the litters and the averages are quite similar to those found in group 1. When measured by the stand- ards for the given body length we find the following: