no* Douglas W. Owsley 



pare this manuscript. The illustrations 

 were provided by Ethan Ericksen. Data 

 collection and analysis were supported 

 by NSF BNS-8 102650 and BNS- 

 8510588. 



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Summary of audience discussion: Poro- 

 tic hyperostosis is not a useful indicator for 

 stress in this population since the avail- 

 ability of bison prevented protein deficien- 

 cy. Dental hypoplasia was absent and trans- 

 verse (Harris") line frequency was not 

 elevated. The pattern of native population 

 decimation secondary to infectious disease 

 shortly after contact with the early colonists 

 is absent in the Plains population reported 

 here. The native population was large, and 

 initially the number of foreigners was low. 

 In fact, the availability of horses enhanced 

 the bison harvest and trade ameliorated the 

 effects of drought. Not until after 1750 did 

 the effects of the flow of eastern colonists 

 moving to and through the Plains become 

 apparent in the natives with a reduction in 

 child growth and increased frequency of 

 premature delivery and the development of 

 an increase in both medullary diameter and 

 the subperiosteal diameter. It is clear that 

 Norden's Index is only of relative value. 



Zagreb Paleopathology Symp. 1988 



