412 MEMOIRS NATIONAL ACADEMY OF SCIENCES, VOL. XIII. 



BIBLIOGRAPHY. 



1. 1852: Root. On a mass of meteoric iron from near Seneca River. Amer. Journ. Sci., 2d ser., vol. 14, pp. 439- 



440. 



2. 1853: Shepard. Notice of the meteoric iron found near Seneca River, Cayuga County, New York. Amer. 



Journ. Sci., 2d ser., vol. 15, pp. 363-366 (Analysis and illustration). 



3. 1859-1862: Von Reichenbach. No. 9, pp. 162, 174, and 181; No. 14, p. 390; No. 15, pp. 124 and 126; No. 16, 



pp. 261 and 262; No. 17, pp. 266 and 272; No. 18, p. 487; No. 19, pp. 149, 155, and 156; No. 20, pp. 622, 625, 

 and 634; No. 21, pp. 588 and 589. 



4. 1885: Brezina. Wiener Sammlung, pp. 213 and 234. 



5. 1893: MEUNrER. Revision des fers m£teoriques, pp. 52 and 55. 



6. 1895: Brezina. Wiener Sammlung, p. 277. * 



Seneca River. See Seneca Falls. 

 Sevier County. See Cosby Creek. 



SHINGLE SPRINGS. 



El Dorado County, California. 



Here also El Dorado County and Los Angeles. 



Latitude 38° 38' N., longitude 120° 59' W. 



Iron. Ataxite, Cape iron group, of Brezina. 



Found 1869-1870. 



Weight, 38.5 kgs. (85 lbs.). 



The first mention of this meteorite was by Shepard, 1 as follows: 



For my knowledge of the meteoric iron of El Dorado County, I am indebted to Mr. Alfred Stebbins, librarian of 

 the Mercantile Library Association of San Francisco. A letter from him dated April 26 inclosed a few grams of 

 turnings obtained during the separation of a slice of the mass destined for the collection of Professor Whitney. 



The mass is described by Mr. Stebbins as having the size and shape of a man's head. It was found in a field, 

 and, as usual, was first taken to a blacksmith's shop, where it was soon found to be an unmanageable subject for 

 working, and hence, fortunately, found its way into scientific hands. Its surface possesses the indentations common 

 to these bodies — the crust or coating being partially oxidized. It weighs 85 pounds. 



I find the turnings to have a specific gravity of 7.80, which may perhaps be a trifle above what the mass possesses, 

 as it is presumable that the turnings have suffered a slight condensation in the process of separation. 



The fragments sent are free from all traces of sulphur. A single analysis upon one gram has afforded me: 



Iron 88. 02 



Nickel 8.88 



Insoluble, consisting of a mixture of Fo and Fe, with minute silvery par- 

 ticles of supposed phosphor-metals (Schreibersite) 3. 50 



100.40 

 The amount of material at command was too small to search for the other metals commonly found in meteoric 

 irons. 



Jackson 2 gave under the name of Los Angeles an analysis of an iron as follows: 



Having received from Mr. E. N. Winslow a slice of the recently found meteoric iron of Los Angeles, I have made 

 a chemical analysis of it, which I now communicate to you. The original mass is stated to have weighed 80 pounds. 

 The slice I received weighed 30 grams. Its specific gravity is 7.9053. 



It shows when acted upon by dilute nitric acid, innumerable scales of schreibersite, but not the usual figures. 



In the chemical analysis I found in the insoluble matter, on reduction by blowpipe, a minute globule of tin. 

 The iron was separated by succinate of ammonia and the nickel by pure potassa. 



The following are the results of the analysis: 



Metallic iron 80. 74 



Metallic nickel 15. 73 



Metallic tin 0. 01 



Phosphorus and other undetermined matters 3. 52 



100. 00 



This analysis, although not quite complete, shows beyond doubt the meteoric nature of the Los Angeles iron. 



Although Jackson gives the name of Los Angeles to this iron and the weight as 80 pounds, 

 there can be little doubt from its composition that the meteorite of Shingle Springs is referred to. 



