^6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 83 



MEASUREMENTS OF THE MAUER JAW— Continued 



The Mauer Jaw 



Schoetensack 



Hrdlicka 



Modern Male 

 German Jaw 



Hrdlicka 



Corpus: (Cont.) 



Thickness, max., in median line. 



Opposite Pm i 



Opposite M I 



Opposite M 2 



Opposite M 3 



Thickness, max 



Denial Arch: 



Antero-posterior median diam. . 



Breadth max. (externally) 



Index (L X 100) 



35 



B 



Combined 

 crowns . , 



length of the 3 molars, 



cm. cm. 



2-5 

 1.95 2.0 

 1.85 1.9 

 2.05 2.08 

 2.25 2.25 



585 

 70s 

 83.0 



3-55 3-55 



cm. cm. 

 1-5 



45 I 

 5 I 

 5 I 



5-4 

 6.4 



844 



3-3 



3 3 



' The right corpus is longer, the left corpus nearly throughout slightly to perceptibly thicker. 



- Doubtless some difference in method. 



' Error. 



* Too small. 



' Schoetensack, in his Memoir on the jaw, pp. 54-59, gives detailed measurements and details 

 on all the teeth , with the results of X-ray examination. Where his and the present writer's measure- 

 ments differ slightly the cause must be slight differences in method. 



2 From Hrdlicka, A., New Data on the Teeth of Early Man and Certain Fossil Anthropoid 

 Apes. Amer. Journ. Phys. Anthrop., Vol. 7, p. 109 et seq., 1924. Includes comparative measurements 

 by same author and methods on many other teeth of anthropoids, early man, and present races. 



' Schoetensack's measurement is doubtless the maximum, the writer's that along the median 

 diameter of the tooth. 



