428 



DR MATTHEW YOUNG. 



the belief that it is very doubtful at present how far it is permissible, if it be so at 

 all, bo build up conclusions as to what form a deficient part of a skull should take 

 from evidence supplied by a skull of another type. 



The above essay on Klaatsch's method has been experimental. As the reader will 

 perceive, 1 have been rather seeking my way through the somewhat elusive detail, 

 bul some important points have emerged, and I have left the matter as it stands 

 for the sake of possible future inquirers. The significance of some of the chief points 

 will be considered again in the section 4 dealing with Schwalbe's data. 



Table L. 



Character. 



Scottish Male Series (100). 



Tasmanian Series (50). 



Australian (90). 



Mean Value. 



S.D. 



V. 



Mean 

 Value. 



Mean 

 Value. 



S.D. 



V. 



Mean 

 Value. 



S.D. 



V. 



M. (30). 



M. &F. 



M. 



M. 



Zen t rum angle 



92-54° 



2-58 



2-79 



89-3° 



89-6° 



1-72 



1-92 



89-45° 



2-05 





Cran.-glab. „ 



74-40° 



2-72 



3 65 



74.70 



75-3° 



2-84 



3-80 



74-92° 



313 





Upper glab. „ 



35-96° 



1-99 



5-54 



37-92° 



38-2° 



2-26 



5-9 



38-07° 



2-40 



6 30 



Lower ,, „ 



38-45° 



2-63 



6-84 



36-8° 



37-0° 



2-86 



7.77 



36-83° 



2-51 



6-82 



Glab. -breg. -lamb, or breg. 























angle 



108-96° 



2-98 



2-73 



106-8° 



106-7° 



2-98 



2-79 



106-94° 



369 





Breg. -lamb. -bas. or lamb. 























angle 



68-34° 



2-84 



4-15 



69-0° 



69-2° 



2-73 



3 95 



70- 1*2° 



2-98 





Lamb.-bas.-glab. orbasion 























angle 



107-44° 



4-43 



4-12 



107-8° 



108-9° 



4-71 



4-37 



107-75° 



4-43 





Glab.-lambda length 

 Glab.-zentrum „ 



184-75 



87-24 



5-857 

 3-75 



3-17 



4-30 



178-7 

 84-8 



175-2 

 83 



5-43 



3 03 



177-12 

 84-63 



6-83 



4-42 



77 



-93 



77-97 



Zentrum-lamb. ,, 

 Basi-breg. height 

 Breg.-zentrum height 



97-41 



133-71 



65-75 



3-956 

 5-478 

 4-072 



4-06 

 4-09 

 6-19 



94 3 



1301 



65-4 



94-8 



128-0 



64-8 



87 



-99 



92-37 



130-00 



65-66 



79-103 



5-27 



| 4-05 



650 

 5-12 



5 00 

 7-79 



54 



-73 



Zentrum basion ,, 

 Glab. -breg. chord . 



67-85 

 111-62 



5-177 

 5-509 



7-63 

 493 



65-0 

 107-6 



63-8 

 105-2 



55 



-75 



64-34 

 106-32 



4-94 

 5-41 



7-67 

 5-08 



5-99 



5-56 



Breg. -lamb. „ 



11515 



5-446 



4-73 



115-3 



113-4 



6-08 



5-27 



114-18 



649 



568 



Lamb. -basion „ 



120-58 



4-675 



3-87 



114-3 



112-3 



4-58 



4-007 



112-01 



531 



4-74 



Basion-glab. „ 



107-57 



4-26 



3-96 



108-6 



105-7 



4-84 



4-46 



107-03 



5-67 



5-29 



Lamb.-inion „ 



65-19 



7-73 



11-85 



56-7 



55-5 



7-04 



12-4 



52-43 



5-65 



10-77 



Basi-nasal length 

 Maximum ,, 



100-96 " 

 18918 



4113 



5-82 



4-07 

 3076 



96-60 





6-02 



6-24 















Basion-prosth. length 



94-87 



4-76 



501 



99-6 



97-0 



88 



-111 



99-86 



84-120 



Front, arc height . 



21-79 



2-67 



12-25 



19-16 



18-9 



15 



-23 



19-30 



13-28 



Pariet. arc „ 



23-39 



2-72 



11-62 



24-3 



23-3 



20 



-28 



22-91 



16-30 



Occipit. arc „ 



9-76 



311 



31-86 



6-53 



6-1 



4 



-11 



5-78 



3-12 



Glab.-breg.-bas. angle 



51-31° 



47°-57° 



52-4° 



51-9° 



49 c 



-56° 







Lamb.-breg.-bas. „ 



57-75° 



52°-63° 



54-8° 



54-8° 



50 c 



-58° 







Breg.-lamb.-glab. „ 



34-61° 



29°-41° 



34-0° 



35-1° 



31 c 



-38° 







Bas.-lamb.-glab. „ 



33-73° 



29°-41° 



34-6° 



35-0° 



30-5 c 



-39° 







Lamb. -basi-breg. „ 



5342° 



46°-61° 



55-8° 



57-7° 



48 c 



-62° 







Glab. -basi-breg. „ 



54-57° 



48°-63° 



52-0° 



52-3° 



47 c 



-58° 







Inion-basion length 



86-44 



68-97 



86-0 





r, 



-96 



86-48 



68-101 



Prostli.-glab. „ 



80-87 



71-93 



73-5 



72-5 



62 



-88 



74-72 



65-87 



Frontal angle . 



136 98° 



127°-149° 





139-5° 



1315 c 



-149° 



139.65° 



123-5°-153° 



Parietal „ 



135-61° 



128°-146° 





134-3° 



125-5 C 



-141-5° 



135-7° 



125°-145° 



Inion „ 



104-77° 



97°-114° 











104-84° 



95°-114° 



Note, — The S.D. and V. have not been calculated for all the measurements. The range of variation is given for 

 these measurements, 



The second column of Tasmanian mean values and the column of Australian mean values are obtained from 

 both male and female skulls or unsexed crania, so that the results are not exactly comparable as regards 

 absolute dimensions and degree of variability with those of the Scottish male series. 



