METEORITES OF NORTH AMERICA. 33 



SiO, 40. 02 



FeO 14.06 



MnO 10 



MgO 45.60 



99.78 , 



The iron which, inclosed these crystals had a specific gravity of 7.894 and gave by J. Lawrence Smith's process of 

 analysis: 



Iron 89.00 



Nickel 1 10.65 



Cobalt 45 



Copper Trace. 



Phosphorus Trace. 



Insoluble residue. . . .09 



100.19 



A polished surface under the microscope showed, beside the crystals of olivine, small crystals of bronzite, which 

 substance could also be easily detected by reflected light. Small quantities of schreibersite were also undoubtedly 

 present, as shown by the traces of phosphorus found in the analysis of the iron. 



The meteorite was entered in Brezina's 1885 Vienna catalogue 3 under the name of Ander- 

 son. On the discovery of the Eagle Station, Carroll County, meteorite, Kunz 5 suggested that 

 the Turner mound material may have been obtained from this locality, but on later investigation 

 and discovery of the Brenham, Kiowa County, pallasites he revised 8 this opinion and concluded 

 it very probable that the iron was the same as Brenham. 



Huntington 7 discussed this possibility and reached the conclusion that there was no 

 reason for regarding them identical. He also discussed the possibility that the iron might have 

 come from Krasnoyarsk. 



In the Vienna catalogue for 1895 Brezina 8 lists the meteorite still under the head of Ander- 

 son and suggests that with it belong probably also meteoric material from Daniel Harness 

 Mound, Liberty Township, Scioto Valley, Ross County, Ohio, found in 1884 ; Till Porter Mound, 

 latitude 38 9' N., longitude 84 52' W., Frankfort, Kentucky, found in 1889; the problematic 

 Circleville, latitude 39 32' N., longitude 82 52' W., Ohio, described in 1820; and Marietta, 

 latitude 39 27' N., longitude 81 26' W., Ohio, described in 1820; perhaps also Brenham. 



Brezina in this catalogue further describes Anderson as showing rounded olivine in a 

 strongly developed nickel-iron network, and the latter as showing swollen swathing kamacite 

 0.5-1 mm. broad, separated by taenite from gray plessite, which is free of skeleton structure. 

 The pallasite has, he says, the greatest similarity in composition and structure with that of 

 Brenham. 



Wulfing 9 lists Anderson as belonging to Brenham, giving it, however, a separate bibliography. 

 Ward 10 lists Anderson separately. This the present writer believes to be the best usage, as a 

 local fall of the iron is quite probable. As Huntington 7 points out, it is quite as reasonable to 

 suppose Krasnojarsk and Anderson of common origin as Brenham and Anderson. Unless 

 there can be traced a more positive connection than has hitherto been done, it seems better to 

 consider Anderson separate. 



BIBLIOGRAPHY. 



1. 1884: KiNNicuTT. Report on the meteoric iron from the Altar Mounds in the Little Miami Valley, Ohio. Kept. 



Peabody Mus., 1884, pp. 381-384. (Analyses and cut of section.) 



2. 1884: WADSWOKTH. Studies, p. 71. 



3. 1885: BREZINA. Wiener Sammlung, p. 251. 



4. 1886: PUTNAM. The Marriott Mound and its contents. Eept. Peabody Mus., 1886, pp. 463-165. (Cut of earrings.) 



5. 1887: KUNZ. On two new meteorites from Carroll County, Kentucky, and Catorze, Mexico. Amer. Journ. Sci., 



3d ser., vol. 33, pp. 228-232. 



6. 1890: KUNZ. On five new American meteorites.' Amer. Journ. Sci., 3d ser., vol. 40, pp. 312-323. 



7. 1891: HUNTINGTON. The Prehistoric and Kiowa County Pallasites. Proc. Amer. Acad. Arts and Sci., vol. 26. 



12pp. 



8. 1895: BREZINA. Wiener Sammlung, pp. 263-2G4 and 339. 



9. 1897: WULFIJJO. Die Meteoriten in Sammlungen, p. 48. 



10. 1904: WARD. Catalogue of the Ward-Coonley collection, p. 29. 



716 15 3 



