12 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 



SUMMARY 



The data presented in the preceding pages together form a consid- 

 erable mass of material of anthropological interest. To make them 

 more easily graspable, they are abstracted in the following tables. 



The statistical data on the White peoples are not as comprehensive 

 or as uniform as might be desired, yet there is something of harmony. 

 Ear exostoses in European and American Whites, taken as a whole, 

 are scarce ; among those with ear troubles they are found in from 0.4 

 to 1.5 percent of the cases, except along the German seacoast, where 

 the percentage is apparently higher. Their racial and local frequencies 

 within the White stem at large cannot as yet be estimated. 



Added to the above observations on Whites may be those of i case 

 of ear exostoses (among 12 skulls) in the Guanche; i in a Nubian; 

 and I (among 516 skulls or 0.2 percent) in an old Egyptian. 



Very different and more precise are the data on the American In- 

 dian. Here there are no reports on the living, all the observations 

 having been made on skulls ; and the skulls show many of the smaller 

 ear exostoses that would give little if any trouble during life and hence 

 would not come under the attention of the otologist, were he present, 

 thus affecting the statistics. In other words, it is certain that the 

 experience of an otologist with these tumors among the Indians would 

 have differed considerably from that of the examiner of their crania. 

 Nevertheless, even if only those ear exostoses be considered that must 

 have caused distress, their frequency in general is above that in the 

 white man. The records are as shown in tables on pages 13 and 14. 



Condensing these two tables and leaving out duplications, we obtain : 



Condensed Data on Ear Exostoses in the American Indian 



Group 

 Chinook, Flat-head, NW. Coast 



Tennessee (& Ohio) 



Peru, Bolivia (& Chile) 



California (chiefly) 



Misc. N. & S. Amer. Indian 



New England Indian 



NW. Coast, misc., undefined. . . 

 Calchaqui 



Skulls 



Skulls with 

 ear exostoses 



Mean 

 percent 



94 

 459 



approx. 

 1,433 



816 



1 ,004 



64 



112 



no 



24 

 71 



149 



38 



54 



o 



o 



o 



25-5 

 15 -5 



10.4 

 4-7 

 5-4 



