154 BULLETIN M, UNITED STATES NATIONAL MUSEUM. 



References.— C. Rammelsberg, Pogg. Ann., vol. 83, 1851, p. 592. 

 G. Tschermak, Min. pet. Mitth., 1872, p. 83. G. P. Merrill, Mem. 

 Nat. Acad. Sci., vol. 14, 1916, p. 17. 



STAUNTON, AUGUSTA COUNTY, VIRGINIA. Nos. 68, 69. 



Iron, Om. Weight, 145 grams. From a mass found in 1858 and 

 described by Mallet in 1871 ; a rectangular slab, etched, and showing 

 coarse Widmanstiitten figures, with scattering grains of troilite; also 

 small mass weighing 9.86 grams found in 1887 and described by G. F. 

 Kunz in 1887. Date of fall unknown. Five masses of this iron, with 

 an aggregate weight of 113,964 grams, were found between 1858 and 

 1887. Analyses of these masses as made (Nos. I, II, III, and V) by 

 Mallet, and (No. IV) by Santos, yielded the results given below: 



Constituents. 



Iron(re) 



Nickel (Ni) 



Cobalt (Co) 



Copper (Cu) 



Tm(Sn) 



Phosphorus (P) 

 Sulphur (S) . . . . 

 Chlorine (CI)... 



Carbon (C) 



Silica (SiOz).... 



99. 872 



Per cent. 

 S8. 365 

 10. 242 

 .428 

 .004 

 .002 

 .362 

 .008 

 .002 

 .185 

 .061 



99. 659 



III 



Per cent. 

 89.007 

 9.964 

 .387 

 .003 

 .003 

 .375 

 .026 

 .004 

 .122 

 .056 



99.947 



Per cent. 



91. 439 



7.559 



.608 



.021 



Trace. 

 .068 

 .018 



Trace. 

 .142 

 .108 



99.963 



Per cent. 

 90.293 



.016 

 .005 

 .243 

 .012 

 Trace. 

 .177 

 .092 



100. 172 



Specific gravity at 15° 7.853, 7.855, 7.839, respectively. 



Mallet also determined the amount and character of the gases 

 yielded by these irons and found the following : 



'' '' Per cent. 



Hydrogen 35. 83 



Cai'bonic oxide 38. 33 



Carbonic anliydride 9- '^5 



Nitrogen 16. 09 



100. 00 



References.— J. W. Mallet, Amer. Journ. Sci., vol. 2, 1871, p. 10; 

 Proc. Royal Soc. London, vol. 20, 1872, p. 365. 



STAVROPOL, CAUCASUS, RUSSIA. No. 179. 



Stone, Ck. Weight, 52.4 grams; fragment with crust; ground 

 ash-gray and finely granular. Fell March 24, 1857. Original 

 weight, 1,632 grams. Analyses by Abich yielded: 



