124 



L. W G. Baduier 



The choice of a base line is therefore, from every staniliioint, a 

 matter of difficulty, and no matter what the ultimate choice may be, 

 it is clear that objections may be raised against it. 



Notwithstanding the many base lines which have already been em- 

 ployed, Klaatsch (15 and 20) has recently introduced yet another 

 method in order to secure a suitable standard basis for craniometrical 

 observations. Whilst attempting to reconstruct the facial part uf 

 the Neaudertal skull, lie found that the glabella inion plane was not 

 suitable for this purpose. He also found that when the skull is 

 oriented in the Frankfort plane, the position assumed is not in har- 

 mony with the natural position of the head in the living suljject. that 

 is, with the eyes directed to the horizon. 



On referring to Snllas's work on the Gibraltar skull, he found that 

 that author had made use of median outline tracings of the cranial 

 part of the skull minus the face, cut out in paper in order to establish 

 the centre of gravity of the brain part of the cranium. Klaatsch 

 reproduced this method, but as an experiment included the face as 

 well. The centre of gravity now naturally fell further downward and 

 forward, and to differentiate this new point from that of Sollas, 

 Klaatsch designated the two points S and K respectively (Fig. 1), S 

 being the centre of gravity as determined by Sollas, without the face, 

 and K the centre of Klaatsch with the face. 



Fig. 1. —Sagittal diagram of an Australian Skull (Klaatsch). Half 

 natural size. 

 K = Klaatsch's Gravitation Point. 

 S ^ SolJHs's Gravitation Point. 



Pr = Prognathic Point. 



