46 Dr Richard Cull's Remarks on 



required to fill the cavity in 38 negroes, and in 77 Euro- 

 peans. I have taken an average of his tables which is sub- 

 joined. 



The average of 38 negroes, is 37 ounces, 6 drams, 18 

 grains. 



The average of 77 Europeans, is 41 ounces, 2 drams, 30 

 grains. 



Thus, the brain of the negro is considerably smaller than 

 the European. And those of the Naloo tribe are no excep- 

 tion to other negroes, if we may suppose those three crania 

 to be average specimens. 



It is difficult to describe irregular solid forms with preci- 

 sion. The verbal descriptions of the various forms of na- 

 tional crania are unsatisfactory. The terms long and broad 

 are vague, and we have gained nothing either in precision or 

 convenience, by exchanging those terms for the cumbersome 

 Greek compounds, brachycephalous and dolichocephalous. 

 The term elongated, besides its vagueness, is suggestive of 

 an artificial change of form, as are also the terms depressed 

 and contracted. Mr Lawrence sums up his description of 

 the Ethiopian variety of cranium thus, " Narrow and de- 

 pressed forehead ; the entire cranium contracted anteriorly ; 

 the cavity smaller, both in its circumference and transverse 

 measurements.* 



I proceed to add such measurements of the Naloo crania 

 as will, with the preceding ones, exhibit their forms, their 

 relative magnitudes, and the relative magnitudes of the 

 regions in each cranium. The situation of the sutures in 

 relation to the subjacent brain, is not sufficiently constant to 

 serve as fixed points for our measurements. The situation 

 of the tuberosities of the parietal and occipital bones are 

 also inconstant. And therefore, we must select some other 

 points. The phrenologists have supplied us with such points 

 in their localization of the mental faculties, and whether we 

 adopt or reject their physiology, we may avail ourselves of 

 their description of the surface of the cranium as fixed sta- 

 tions for our survey. My friend Dr Browne, at my request, 



* Lawrence's Lectures on Man, section 2, chap. 4. 



