Foraiiifiti, Occiintdle Mii(/nii,iii. 



209 



These results have been nl)tained in precisely the same manner as 

 those of the Tasmanian, and. therefore, need no further explana- 

 tion. 



TABLE IT. 



Australian Ckania. 



X.ature of Obiervatioii. 



."). Broca's Ang'le - - - l()2.28±().48 



• ;. FonuninalAnolo (Hfiohnei') l()().98±li.44 



7. Kasal Index ( Buchner) - 52.47 ±0.24 



8. Basal Angle ( Buchner) - yi.72±0.4(J 



Statidai-d Deviation 

 and Hroh. Krrnr. 

 .-).21±U.Hr) 

 4.S ±0.31 

 2.t;0±0.17 

 4.37±0.29 



Nature of Ob: 



Index Basalis 

 Ba.sal Anw'le 



TABLE II L 



BoLK's OnSRRVATIONS. 



^"°" and Proh. Error. 



45.S4±U.26 

 99.68±0.58 



Standard Deviation 



and Prot). Error. 



2.74±0.18 



o.n±0.41 



Again, by conipariii;j: the observations (7 and 8) based on the 

 nasion-inion plane with those based on Broca's and the Frankfort 

 Plane methods, it will be noted that the former are the least vari- 

 able. 



In Table iv. the results for each observation in the Tasmanian- 

 Australian groups, together with those furnished by Bolk, are set 

 forth in order of their variability. In each instance, the observa- 

 tions based on the nasion-inion plane, which concern the present 

 work, are the least vai'iable. whilst the angular measurements based 

 on Broca's and the Frankfort Plane methods show the greatest 

 variability, whicli is s\ifficiently liigh to preclude them from further 

 consideration. 



In conclusion, when fuither comparative data are available, a 

 better test will be afforded as to the practicability of the original 

 methods herein described. From the material available it is cleai' 

 that the observations based on the nasion-inion plane are the 

 more accurate. The present work also furnishes another proof that 

 the bisection of crania is unnecessarv. 



