64 BULLETIN M, UNITED STATES NATIONAL MUSEUM. 



rust spotted. Composition, according to analysis by C. T. Jackson, 

 as follows: 



Per cent. 



Silica (SiOi) with traces of tin oxido (SnO.) 40.00 



Magnesia (MgO) 26.60 



Ferrous oxide (FeQ) 27.70 



Iron (Fe) 3.50 



Nickel (Ni) .80 



Alumina (AhOa) -40 



Chlorine (CI) .049 



99. 049 



This fall was remarkable from the fact that fragments picked up 

 immediately after the fall were stated to have been so cold as to 

 benumb the fingers, although but a moment before they had been 

 glowing hot. 



References. — C. T. Jackson, Proc. Boston Soc. Nat. Hist., vol. 8, 

 1861, p. 233; S. Haughton, Philos. Mag., vol. 32, 1866, p. 266. 



DJATI-PENGILON, DISTRICT OF NGAWI, JAVA. No. 114. 



Stone, Ck. Rectangular fragment with crust, weighing 469 grams. 

 Weight of original mass, 166 kilograms. Fell March 19, 1884. Com- 

 position according to analysis of Verbeek and Retgers : 



Per cent. 



Silica (SiOj) 56.61 



Alumina (AI2O3) 3.75 



Ferrous oxide (FeO) 16.04 



Manganous oxide (MnO) Trace. 



Lime (CaO) 3.00 



Magnesia (MgO) 19.52 



Potash (K2O) -07 



Soda (Na^O) 1-15 



Chromate ( ?) -24 



100.38 

 Fi-om this the mineral composition was calculated as : 



Per cent. 



Nickel-iron 21. 3 



Iron sulphide 5. 1 



Olivine 33. 4 



Bronzite ^9. 



Chromite -^ 



98.9 



The nickel-iron consists of 88.68 iron, 10.78 nickel, and 0.54 cobalt; 

 the iron sulphide consists of iron 63.64 and sulphur 36.36, which is the 

 composition of troilite. This is claimed to be the first accurate de- 

 termination of this form of the sulphide in a stony meteorite. 



Gift of Government of Netherlands. 



