42 Dr Richard Cull's Bemarks on 



civilization of the prognathous negro population which is 

 now taking place in Liberia. 



The physical man given to find the mental one, has been 

 a problem which has engaged much attention. Physiologists 

 have all rightly considered the brain as the organ of the 

 mind. The question then arose, what are the peculiarities 

 of brain on which the recognised peculiarities of mind de- 

 pend ? Camper invented his facial angle to measure the 

 facial line, on the assumption that that line measures those 

 peculiarities of brain. Blumenbach, Cuvier, Majendie, Tiede- 

 mann, Pritchard, and others, declare its failure ; and Pro- 

 fessor Owen correctly remarks, that the difference of the 

 facial angle in the Naloo skulls depends on the different 

 development of the incisive alveoli ; and hence the facial 

 angle does not even measure the relative prominence of the 

 jaws. 



Several other methods have been proposed to measure 

 those peculiarities of brain, and I shall briefly refer to them, 

 because they are important in relation to these Naloo crania, 

 and will be necessary to my subsequent contributions on the 

 craniography of the races of man. 



Daubenton's angle is never heard of now. Blumenbach's 

 observations fully proved its insufficiency. 



Pritchard's method is condemned by Professor Owen, in 

 his observations on these Naloo crania. 



Daubenton long ago pointed out the relative situation of 

 the foramen magnum in the head of man and of animals. It 

 is placed much farther backwards than in the human head. 

 It may be remarked, that this proposition is merely asserting 

 in another form of expression, that the jaw of animals is 

 more prominent than that of man. Professor Owen's objec- 

 tion to Camper's facial angle is equally fatal to Daubenton's 

 proposition concerning the situation of the foramen magnum ; 

 and it is also equally fatal to those inferences which Dr 

 Pritchard drew from Mr Owen's statements on the subject, 

 in his memoir on the osteology of the Chimpanzee. And 

 Dr Pritchard subsequently admitted, that the relative situa- 

 tion of the foramen magnum in human crania depends on the 

 prominence of the alveolar process. There is no fixed ratio 

 between the size of the human cranium and face ; and there 



