NO. 



EAR EXOSTOSES HRDLICKA 



71 



the Calchaqui, who present the same variety of deformation. These 

 results are further strengthened by Hooton, who failed to find any 

 noteworthy involvement in his large Pueblo series from old Pecos. 

 All this justifies the conclusion that the simple occipital cradleboard 

 compression does not favor — and may possibly even check in some 

 way — the develoi)ment of ear exostoses. 



On the other hand the fronto-occipital artificial deformation, pro- 

 duced by the direct and forci])le application of pressure over the fore- 

 head with a counter pressure on the back of the head, must be viewed 

 with the increasing suspicion that it aids in some way in the ap- 

 pearance of the growths under consideration. 



New Data 



Author 



Territory 



Deformation 



Number 

 of skulls 



amined 



Number 

 of skulls 

 with ear 



Per- 

 centage 

 of skulls 

 with ex- 

 ostoses 



Hrdlicka 



American: 

 Eskimo. . . . 

 Old Pueblo. 



N. Dakota. 

 Florida .... 



California. . 

 NE. States. 

 Peru 



Virginia . . 

 Louisiana. 



Arkansas . 



nearly all deformed, 

 occipital flattening 



about 10 percent 

 deformed, fronto- 

 occipital 



most deformed-mainly 

 fronto-occipital — 

 some circular 



S. Dakota, all. . . 

 S. Dak., Movvbridge 

 Kentucky 



frequent deformation, 



fronto-occipital 

 occasional deformation, 



fronto-occipital 



only a few deformed, 

 occipital or fronto- 

 occipital 



Polynesian: 

 New Zealand. 

 Hawaii 



most undeformed — 

 occasional fronto- 

 occipital 



1 ,000 

 500 



29 

 395 



435 



112 



3,651 



65 

 61 



173 



109 

 76 

 90 



19 



148 



2 

 12 



2 



35 



46 



13 

 522 



14 

 15 



47 



30 



23 

 29 



4 

 39 



0.2 



2.4 



6.9 

 8.9 



10 .6 

 II. 6 

 14 3 



21.5 

 24.6 



27 2 

 32.2 



21 . I 

 26.4 



This matter may perhaps be more conclusively tested in another way. 

 In six of our series exact records were made of the three inain kinds 



