746 



T. C. CHAMBERLIN 



comparison was made with other human relics regarded as dating 

 from the glacial period, and estimates in years of the duration of 

 the several glacial stages were added. 



In the same number of the American Geologist, Professor Win- 

 chell commented at length editorially upon the Lansing skeleton. 

 He referred with implied approval to the article of Mr. Upham, 



Fig. i.- — Side view of skull and femur found in the tunnel. From a photograph 

 furnished by Mr. M. C. Long. 



supplied additional information relative to the history of the dis- 

 covery, to the deposit embracing the relics, and to the nature and 

 condition of these. He regarded the main material penetrated 

 by the tunnel as common loess, and located the skeleton in the 

 unstratified limestone debris that lies below it. " It is hence pre- 

 loessian, but probably not much older that the loess." He 

 discussed at some length the age and relations of the loess, and 

 concluded: "It will require, therefore, considerable further and 

 careful examination of the loess sheets of Iowa, and of their 

 relations to the till-sheets, as well as the marginal features of the 

 till-sheets themselves, to enable any one to fix with any certainty 



