110 BULLETIN y4, UNITED STATES NATIONAL MUSEUM. 



The mass composition, as derived from the combination of the sev- 

 eral determinations, is: 



Per cent. 



Iron (Fe) 6. 56 



Nickel (Ni)___^ .68 



Cobalt (Co) .034 



Sulphur (S) 1.38 



Phosphorus (P) -051 



Silica (SiOj) 44.13 



Ferrous oxide (FeO) J 15.37 



Mauganous oxide (MnO) •10(?) 



Lime (CaO) 1.74 



Magnesia (MgO) 26.45 



Alumina (AUOs) 2.47 



Potash (K2O) Trace. 



Soda (Na^O) .44 



99.40 



The mineralogical composition, as calculated from the above sum- 

 mation, is as follows : 



Per cent. 



Nickel-iron 4. 59 



Troilite 3. 79 



Schreibersite • 34 



Olivine 46. 40 



Eustatite 29. 94 



Other insoluble silicates 14. 36 



99.42 



References.— George P. Merrill, Amer. Journ. Sci., vol. 21, 1906, 

 p. 3.5G. O. C. Farrington, Field Col. Mus. Pub. No. 122, Geol Ser., 

 vol. 3, No. 6, 190T, p. 121. 



MOLONG, NEW SOUTH WALES, AUSTRALIA. No. 516. 



Stonj'-iron, Pallasite. Roughly broken oxidized fragments weigh- 

 ing 510 grams from a recently found mass as yet undescribed. 

 Gift of Department of Mines, Sydney, New South Wales. 



MONROE (CABARRUS COUNTY), NORTH CAROLINA. No. 268. 



Stone, Cga. Fragment with small area of crust, weighing 49 

 grams, from a mass weighing originally about 8.8 kilograms, or 19^ 

 pounds, which fell on October 31, 1849. The mineral and chemical 

 composition as given by Merrill is as follows : 



Silica (SiOa) 36.711 



Alumina (AI2O3) 3. .59 



Chromic oxide (GroOs) Trace. 



Ferrous oxide (FeO) 14. 80, .,, ^ „ „^ 



., , ' r^^ oQ >Silicates_— 82. 60 



Manganous oxide (MnO) .23 



Nickel and cobalt oxides ( NiOCoO ) __ .46 



Lime (CaO) 2.27 



Magnesia (MgO) 24.54 



