South Dakota School of Mines 



of the scapula of a "Palaeotherium" as 1.90 per cent.* For 

 those interested in the chemical nature of the bones, I give the 

 following careful analyses made many years ago by Dr. Francis 

 V. Greene from material collected by the Owen Survey and 

 published in the American Journal of Science, 1853.1" Others 

 by D. D. Owen are given in the Owen Survey Report, 1852. 



Analyses of Badland Fossils 



Constituent. 



Phosphoric Acid (P2O5) 



Silica (SiOz) . 



Ferric Oxide (Fe2C>3 



Fluorine (F) 



Magnesia (MgO) ... .., 



Lime (CaOj 



Potash (K2O) 



Soda (NaaO) 



Baryta (BaO) 



Chlorine (CI) 



Sulphuric Anhydride (SO3). . 



Carbonic Acid (CO2) 



Water (H2O) 



Organic Matter 



Total 



I 



2 



3 



4 



Percent 



Percent 



Percent 



Percent 



33.98 



39-15 



35-97 



31.19 



O.09 



0-48 



0.79 



O.26 



1.77 

 O.40 









0.04 



1.42 



2.46 



0-33 



0.22 



0.53 



1. 14 



49-77 



51.80 



51-23 



50.83 



0.31 



0.24 



0.23 



O.28 



I.I3 



1.28 



0-75 



1-57 



36 









1. 10 

 O.02 



0.88 



1. 01 



*-5i 



2.19 



4.08 



3-*7 



2.83 



2-77 



2,04 



0.62 



2.10 



1.97 



5.67 



2-54 



2.66 



4.09 



100.81 



100.55 



100.02 



99.87 



In the above analyses. No. 1 is that of a Titanothere bone, 

 No. 2 of a Titanothere tooth (enamel), No. 3 of a Titanothere 

 tooth (dentine). No. 4 of an Archaeotherium (Elotherium) bone. 



Gold. Gold is reported to be found occasionally in the 

 gravels of the Big Badlands. It occurs in appreciable quantity 

 only in placer form, and how extensively it is distributed through 

 the formation is not known. Its presence seems to be limited 



*Owen, D. D. Report on a Geological Survey of Wisconsin, Iowa, 

 and Minnesota; and Incidentally of a Portion of Nebraska Territory. 

 Philadelphia, 1852, p. 606. 



II am indebted to Prof. M. F. Coolbaugh of the Department of 

 Chemistry in the School of Mines, for reviewing the original analyses 

 and changing them to harmonize with /present day usage. 



