32 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 93 



in the literature I was able to find 84 cases, or rather ears, in which 

 the number of exostoses was given. The results follow : 



Number of Exostoses in Individual Ears of JVhite Subjects Recorded in 

 Otological Literature 

 Number 



of records Exostoses 



on individual 

 cars 



It seems plain from the above data, small in number and imperfect 

 as they are, that among the Whites, in over one-half to two-thirds of 

 the ears affected by exostoses in the external meatus which come to 

 the attention of the aural surgeons, there is but one of these growths, 

 and in the remaining number there are two or over. 



Nezv observations. — A much more satisfactory record can be pre- 

 sented in connection with the new observations that are given in this 

 work, though on different racial groups: 



Number of Exostoses in Individual Ears Affected with Such Growths 



Group 



Egyptian. 



Skulls 



American : 



Eskimo 



Old Pueblo 



N. Dakota 



Florida 



California 



NE. States 



Peru 



Virginia 



Louisiana 



Arkansas 



S. Dakota, all 



S. Dakota, Mowbridge 

 Kentucky 



Polynesian: 

 New Zealand 

 Hawaii 



454 



1 , 000 

 500 

 29 

 395 

 435 

 112 



3,651 



65 

 61 



173 



109 



76 



90 



19 

 148 



Skulls 

 with ear 

 exostoses 



12 

 2 



35 

 46 



13 

 522 



14 

 15 

 47 

 30 

 23 

 29 



4 

 39 



Percentage of exostoses in individual ears 



Over 3 



8.3 



2.0 

 I .2 



0.4 

 8.0 



8.3 

 2.7 



(28.5) 



1-5 



It will be seen that in all the larger groups a single outgrowth in 

 a meatus is the most frequent condition. In our Pueblos, curiously, 

 it is the universal, and in our old Egyptians a nearly universal, condi- 

 tion. But in most of the other groups two exostoses per meatus are 

 also fairly frequent ; three are scarce, and more than three are decided 

 rarities. 



