326 PROCEEDTKGS OF THE NATIONAL MUSEUM. vol.51. 



An analysis by J. E. Vfhitfield yielded: 



Per cent. 



Pho8phorus(P) 0. 170 



Sulphur (S) 377 



Nickel (Ni) 6. .380 



Cobalt (Co) 370 



Carbon (C) 204 



Iron (Fe) 61. 329 



Iron oxide 27.890 



Nickel oxide (NiO 1. 100 



Sulphuric acid (SO.,) 0. 085 



Ignition 2. 750 



100. 655 



Total iron 80. 852 



Iron in oxides 19. 523 



Metallic iron 61. 329 



The ignition was made independently on a fragment somewhat 

 more highly oxidized than that used for analysis. This doubtless 

 accounts in part for the footing up so much in excess of 100. 



The main mass of the iron, weighing 1,570 grams after cutting, is 

 in the possession of Ward's Natural Science Establishment, Roches- 

 ter, New York. To them I am indebted for material for analysis 

 and a slice for the museum collections. 



EXPLANATION OF PLATE 28. 



Fig. 1 . Etched slice of the Cookeville, Tennessee, meteoric iron. Natural size. Cat. 

 No. 518. The dark border at the upper left and below is of oxidized ma- 

 terial. 

 2. The Cookeville meteoric iron as found. 



