160 BULLETIN 94, UNITED STATES NATIONAL MUSEUM. 



References. — For full bibliography, which includes a large number 

 of titles, see Wiilfing, pp. 357-360. Especial references, Cohen and 

 Weinschenk, Ann. k. k. Naturhist. Hofmus., vol. 6, 1891, pp. 135-142. 

 H. Laspeyres and E. Kaiser, Zeitschr. fiir Kryst. u. Min., vol. 24, 

 1895, pp. 485-493 ; vol. 27, 1896-97, p. 586. 



TOMBIGBEE RIVER, CHOCTAW COUNTY, ALABAMA. No. 252. 



Iron, Ha. Weight 2,954 grams. Slice some 11 by 18 by 4 cm., 

 showing original and polished surface, the latter etched, showing a 

 granular structure and large schreibersite inclosures (see pi. 36). 

 Described in 1899. Originally six masses, weighing all together 

 53,795 grams. The slice in this collection is from mass No. 3 described 

 by Foote, the original weight of which was 9,125 grams. This was 

 found in 1886 on a hill in the southwest quarter of section 4, range 2 

 west, township 14, Choctaw County. Analysis by Wliitfield on sam- 

 ple No. 5 yielded : 



Per cent. 



Iron (Pe) 95.02 



Nickel (Ni) 4.11 



Cobalt (Co) .40 



Phosphorus (P) .324 



Carbon (C) .161 



Sulphur (S) Trace. 



100. 015 

 Reference. — W. M. Foote, Amer. Journ. Sci., vol. 8, 1899, pp. 

 153-156. 



TOMHANNOCK CREEK, RENSSELAER COUNTY, NEW YORK. No. 23. 



Stone, Cgb. Twenty-two grams from a mass weighing about 1.5 

 kilograms found in 1863. 



TONGANOXIE, LEAVENWORTH COUNTY, KANSAS. No. 263. 



Iron, Om. Weight 195 grams. Polished slab 13.5 by 8 cm. with 

 etched surface showing Widmanstatten figures. Date of fall un- 

 known. Found in 1886. Original weight 11.8 kilograms (26 pounds) . 



It has the following composition : 



Per cent. 



Iron (Fe) 9L 18 



Nickel (Ni) 7.93 



Cobalt (Co) .39 



Phosphorus (P) .10 



Copper (Cu) Trace. 



99.60 

 Specific gravity, 7.45. 

 Reference. — E. H. S. Bailey, Amer. Journ. Sci., vol. 42, 1891, p. 385. 



