QUATERNARY AGE. 



267 



Lower Loup; No. 4 from Button, and No. 5 from the Republican 

 Valley, near Orleans, in Harlan County : 



After making the above analyses I received from Dr. Hayden 

 his Final Report on the Geology of Nebraska. This report, on 

 page 12, contains two analyses of the Loess deposit from Hannibal, 

 Mo., made by Dr. Litton. According to these analyses, from one 

 hundred parts there were 



According to these analyses the Loess contains more clay in Mis- 

 souri than it does in Nebraska. The analyses that I made of two 

 specimens of Loess from Richardson County also contained slight- 

 ly more alumina than the above. 



For the purpose of comparison, I here reproduce, from Hayden's 

 report, Bischoff's analyses of the Lacustrine or Loess of the Rhine: 



NO. OF ANALYSIS. 



