246 SS. G. Morton on the Size of the Brain in Man. 
Arr. XXVI.—Observations on the Size of the Brain in va- 
rious Races and Families of Man; by Samvue, Grorce 
Morton, M.D.* — 
I nave great pleasure in submitting to the Academy the results 
of the internal measurements of six hundred and twenty-three 
human crania, made with a view to ascertain the relative size of 
the brain in various races and families of man. ‘ 
These measurements have been made by the process invented 
by my friend, Mr. J. 8. Phillips, and described in my Crania 
Americana, p. 253, merely substituting leaden shot, one-eighth of 
an inch in diameter, in place of the white mustard-seed originally 
used. I thus obtain the absolute capacity of the cranium, or bul 
of the brain, in cubic inches ; and the results are annexed in all 
those instances in which I have had leisure to put this revised 
mode of measurement in practice. I have restricted it, at least 
for the purpose of my inferential conclusions, to the crania of 
persons of sixteen years of age and upwards, ‘at which period the 
brain is believed to possess the adult size. Under this age, the 
revise all that part of the series that had not been previously 
measured by myself. I can now, therefore, vouch for the accu- 
racy of these multitudinous data, which I cannot but regard as 
a novel and important contribution to Ethnological science. : 
I am now engaged in a memoir which will embrace in detail 
the conclusions that result from these data ; and meanwhile I sub- 
mit the following tabular view of the prominent facts. (See op- 
posite page. 
The measurements of children, idiots and mixed races are omit- 
ted from this table, excepting only in the instance of the Fellahs 
of Egypt, who, however, are a blended stock of two Caucasian 
nations,—the true Egyptian and the intrusive Arab, in which the 
characteristics of the former greatly predominate. : 
o mean has been taken of the Caucasian racet collectively, 
because of the very great preponderance of Hindu, Egyptian and 
Tse ne RSS APC One RE Ce On SAPO Wiseel aI eae 
* From the Proceedings of the Academy of Natural Sciences, Philadelphia, Oc- 
tober, 1849. 
_ + It is necessary to, explain what is here meant by the word race. Further re- 
searches into Ethnographic affinities will probably demonstrate that what are now 
termed the jive races of men, would be more appropriately called groups; that 
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