358 ON THE PEOPLE OF THE LONG-BARROW PERIOD. 



marks in the vault of the skull. It will make the matter plainer, 

 and at the same time facilitate the production of similar prepara- 

 tions in other museums, to say that a brain, under such surrounding's, 

 presents something of the appearance in the skull which a living 

 head does when subjected to measurement in such a cephalometer as 

 that of M. Antelme 1 . By means of such a preparation it is easy to 

 show that the post-coronal depression in the roof of the skull does 

 not correspond, as supposed by the late Dr. Thurnam 2 , to the fissure 

 of Rolando, but to the deep, and often wide, fissure which divides 

 the superior frontal convolution into two well-defined lobes, and 

 abuts upon the ascending frontal convolution, by a terminal bifur- 

 cation into two arms of considerable length. This fissure, as is well 

 known, exists, and has often been described and figured in the 

 brains of the anthropomorphous apes, in the crania of which animals 

 the post-coronal depression is sometimes indicated when the sagittal 

 carina is absent. Similarly, the second of the depressions which I 

 have noted as commonly present in the postero-inferior part of the 

 parietals of ' ill-filled ' skulls, may be seen to correspond to a certain 

 multiradiate fissure frequently noticeable on the posterior or convex 

 aspect of the middle temporo-sphenoidal convolution, but, as far as 

 1 know, not named by any of the numerous writers who have 

 followed Gratiolet in describing the convolutions and fissures of the 

 cerebrum. 



Professor Bischoff, however, in his well-known paper on 'Die 

 Grosshirnwindungen des Menschen 3 , 5 speaks of certain fissures, 

 without any well-defined character, which appear on the boundary 

 between the parietal and occipital lobes, and says that they cor- 

 respond to a ' fissura occipitalis externa ' which appears in the 

 human foetus, but is normally limited in duration to the seventh 

 and eighth months of intra-uterine life. Though brachycephalic 

 skulls have not, as yet, been proved to have been found in Great 

 Britain in any primary interments in the barrows of which I am 

 writing, and though brachycephalic skulls from the United King- 

 dom, and, indeed, I am inclined to think, from European countries 



1 See ' Mem. Soc. Anthrop. de Paris,' torn. i. pi. vi. fig. 2. 



2 'Nat. Hist. Review,' April I, 1865, p. 267. 



3 In the ' Abhandlungen der k. Bayer. Akademie der Wiss.' Class ii. Band x. 

 Abtheil. ii., 1868, pp. 448, 450, 495 ; or ' Separat-Abdruck,' pp. 58, 60, 105, and Taf. 

 x. fig. 7. 



