120 BULLETIN 94, UNITED STATES NATIONAL MUSEUM. 



The total weight of all the known material is nearly 10 kilograms. 

 Analysis by J. E. Whitfield yielded: 



Per cent 

 Silica (SiOj) 38.340 



Ferric oxide (FeoOj) 8.551 



Alumina (AUO3) 8.259 



Chromic oxide (Or203) .587 



Lime (CaO) 1.180 



Magnesia (MgO) 24.040 



Loss on ignition 3. 500 



Iron (Fe) 13.860 



Nickel (Ni) 1.050 



Cobalt (Co) .030 



Copper (Cu) .050 



99. 447 



References. — G. P. Merrill, Amer. Journ. Sci., vol. 35, 1913, p. 517. 

 H. A. Ward, Amer. Journ. Sci., vol. 7, 1809, p. 233. 



NETSHAEVO, GOVERNMENT OF TULA, RUSSIA. No. 494. 



Stony-iron, Mesosiderite. A fragment, weighing 13 grams, from 

 a 250-kilogram mass found in 1846. This fragment represents the 

 silicate portion of a mass composed largely of metal, and classed by 

 Brezina as an octahedral iron with crystalline chondrites. It may 

 best be described as an iron with included fragments of silicate min- 

 erals in pieces up to a walnut in size. Auerbach's analyses showed it 

 to consist of 72.98 olivine, 16.70 metal, 10.21 plagioclase and augite, 

 0.11 chromite, and traces of iron sulphide. 



Reference. — H. Laspeyres, Zeitschr. Kryst. Min., vol. 24, 1895, 

 p. 495. 



NEW CONCORD, MUSKINGUM COUNTY, AND GUERNSEY COUNTY, OHIO. Nos. 2, 62, 



324, 339, 367. 



Stone, Cia. Three broken masses and two complete individuals, 

 ■weighing 21, 196, 554, 1,720, and 2,841 grams. From a fall on May 1, 

 1860, comprising over 30 stones, the largest of which weighed 209 

 kilograms (460| pounds), and the aggregate weight of which was 350 

 kilograms (770 pounds). 



This is one of the most remarkable and interesting of American 

 falls, not merelj'^ on account of the size and number of the stones, but 

 because of the large number of witnesses and consequently the amount 

 of reliable data concerning it. It is well to note that though some of 

 the stones were gathered up immediately they were not warmer than 

 though they had been lying in the sun, and a 51-pound mass buried 

 itself in the ground to a depth of but about 2 feet. As determined 

 by J. Lawrence Smith, the mineral composition is: 



