Darwin made easy / by Edward B. Aveling.

  • Edward Aveling
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Darwin made easy / by Edward B. Aveling. Source: Wellcome Collection.

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    1a whom the brain volume was less than the 600 c. c. of the apes. Name. Age. Brain Capacity. 1. Gottfried Msehre ... ... 44 555 2. Michel Sohn 20 370 3. Frederic Sohn ... ... 18 460 4. Conrad Shuttelndreyer ... 31 370 5. Microcephalus of Jena ... 26 350 6. Ludwig Racke ... ... 20 622 7. Margueiite Msehler ... 33 296 8. Jean Moegle ... ... 15 395 9. Jacques Moegle 10 272 10. Jean Georges Moegle ... 5 480 (c) As to brain weight.—This is, in one way, a better test than volume, just as the amount of matter in a book or a lecture or a life is of more importance than the length of either book, lecture, or life. We may take the average weight of the brain in a European man as 49 ounces. That of an anthropoid ape is 15 ounces. A great interval truly between 49 and 15. But every one of the numbers between these is to be found in the list of human brain weights. Human 'veings have been encountered the weights of whose brain have been 48, 47, 46 ounces, and so on down to 17, 16, 15,-and beycnd. It is here only necessary to give two or three cases of weights less than the average in anthropoid apes. Professor Owen records a case of a microcephalous idiot, aged 22, in whom the brain weight was only 13T2. Pro- fessor Theile one aged 26, brain weight 10*6. Professor Marshall one aged 12, brain weight 8*5. With respect to this last case we must bear in mind that the brain weight of the child of 12 is -f- that of the adult. Thus the average European child’s brain weight would be -f- of 49 = 42 ounces. Once more then we find that the difference between the brain weights of man and man, 49 and 8*5, is greater than that between the brain weight of man and anthropoid apes, 49 and 15. For the verification of these numbers the student may be referred to Bastian’s “ Brain as an Organ of Man,” pp. 365. .... 6. The ear.—The ear is one of the most variable of the organs of the human body. This is pointed out by Professor Haeckel in his lecture on the development of the sense-organs <*“ Pedigree of Man,” Lecture X.), and. will be corroborated by
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