126 



L. W. (J. Bachncr 



F/C2 



Fig. 2. — Illustrating Klaatsch's Craniotrigonometrical Method. 



G = Glabella. B = Bregma. L = Lanil)cla. I = Tni()n. Ba 



= Basion. P = ProsthioM. S-=Zeiitrum. 

 1-4 Inner Triangles. 5 Frontal Triangle. 6 Parietal Tri-, 

 angle. 7 Chief Occipital Triangle. 8 Adjacent Occipital 

 Triangle. 9 Upper F;tcial Triangle. 



It was suggested to uie by Professor Berry, of Melbourne X'^niver- 

 Bity, that I should apply this new craniotrigonometrical method of 

 Klaatsch to the fifty4\vo Tasmanian crania previously examined by 

 Dr. Robertson and himself (5) to ascertain if the methods just referred 

 to as having been recently used by Klaatsch, were better adapted to 

 the evolutionary morphology of the skull, than the older '' form 

 analysis " method of Schwalbe ; and, in the second place, tn ascertain 

 if the several ranges of vaiiation of the measurements to be recorded 

 by this new method led to the same general conclusion as those 

 obtained by the older method. 



The u)aterial upon which this invest igatitvn is based will be found 

 in Berry nnd Robertson's Dioptrographic Tracings in Four Normae of 

 Fifty-two Tasmanian Crania (21). The present series of observa- 

 tions will be found in Noiina A, that is, the medium sagittal tracing. 



