Anthropological notes on Bantu natives from Portuguese East Africa / by G.D. Maynard and G.A. Turner.

  • Maynard, George Darell, 1876-1923.
Date:
1914
Catalogue details

Licence: In copyright

Credit: Anthropological notes on Bantu natives from Portuguese East Africa / by G.D. Maynard and G.A. Turner. 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.

    21/54 (page 19)
    The ratio of stature in c.m.s. to cerebrum, and to cerebellum, pons, and medulla weights in grams for the various groups is shown below;— TABLE IX. Ratio of Wright, (1) Cerebrum, and (2) Gerehcllum, Pons, and Medulla, to Stature. Weight in Grams to Stature in Centim.etres. Country of Origin. Cerebrum. Mozambique ... ... 6-80 Quilimane ... ... 6-77 Nyassa ... ... ... ... ... 6‘77 Tete ... ... ... 6-76 Total Tropical ... ... 6’79 Tnhambane ... ... ... ... 6-56 M'chopi ... ... ... ... ... 6-40 (razaland ... ... ... ... 6-49 Maputaland ... ... G ••59 East Coast Total ... ... ... 6-.51 Cerebellum, Pons, and Medulla. 0-996 0-980 0-998 1 -014 0-994 0-997 0-964 0-990 0-974 0-987 Marshall has given the ratio for Europeans of cerebrum in grams to height in centimetres as seven. If we accept this as the correct ratio for Europeans, it will be apparent that the ratios here recorded are of a rather lower value, and the cerebrum weights would have to be increased by about thirty-five grams for Tropicals, and eighty-six grams for East Coast Natives to bring the ratio to the value seven. From the table of weights of cerebrum and stature for English Males given by Dr. Pearl, and already referred to, we find the ratio to be 6'0, and presumably all adult ages may be included in this table. It has been shown by many writers on the subject that brain weight is negatively correlated with age after growth is complete. We might expect, therefore, that this ratio would show diminishing values as the mean age of the group was increased, unless the decrease in height with age occurred at a similar i-ate, which there is reason to doubt. Thus, there is some a priori reason for considering that the Bantu cerebrum is rather lighter in relation to statiu’e than that of the European.