OF THE ORANG UTANG. 11 



velopment of the frontal, remain unaffected by the application of 

 either canon. Of their value our figures will enable the reader to 

 judge for himself. 



After comparing our single brain of the chimpanzee with the 

 two of the orang we possess in our Museum, we cannot see that the 

 African ape contrasts in any one of these nine points to disad- 

 vantage with the Asiatic. 



Under our second head, — that, namely, of the differences which 

 weighing and measuring enable us to enucleate as existing between 

 the several subjects of our comparison, — we have eight points of 

 difference to enumerate. When it is not otherwise specified, the 

 measurements of the human brain were taken from a brain of a 

 German of average intelligence, the brain having recently been 

 brought to the Museum, and presenting nothing peculiar, in the way 

 either of under- or of over-development, to render it unfit to serve 

 as a standard of comparison to the brain of the orang. , Both sets 

 of measurement were taken at the same time. 



The entire weight of the orang's body being i61b. i2oz., the 

 weight of the brain was 1 2 oz. The relation of the weight of the 

 brain to that of the body was, therefore, as I : 22-3. 



I find recorded by Huschke l a set of observations analogous to 

 these. They were made upon a child of six years of age. The child 

 was a girl, dying emaciated of pleuro-bronchitis. 



Weight of body 13.377 grammes, or c\ 291b. 



Weight of brain 1.215 grammes, or c a . 2 lb. iooz. 



The brain : the body = 1 : 11. 



The state of emaciation in which this child is reported to have 

 died makes it the fairer to take it as a standard in this comparison. 

 The child's dentition may very well have been in the same state as 

 that of our orang ; its age, however, was in all likelihood much 

 further advanced ; but as the brain would have been growing rapidly 

 during those years, whilst the weight of the body was not increased 

 proportionally, the excess of years may not in reality have caused 

 in this case any diminution in the relative disproportion of the 

 child's brain to its body, as it does in cases of healthy development. 



1 'SchadeL Hirn und Seele,* 1854, p. 112; 'Phil. Trans.' 1836, p. 501. Boy, 

 set. 3, Body well nourished = 41 lb. 2 oz. Troy: Brain=2lb. 30Z. 2 dwt. 28 gr. Ro = 

 Body, 18-008 : 1 Brain. Girl, aet. 8*8, Body well fed = 49lb. 2 dwt. 51 gr. : Brain = 

 3lb. 5 oz. 5 dwt. Bo = Body, 14^ : 1 Brain. 



