HANDBOOK OF THE METEORITE COLLECTIONS. 67 



References. — K. Howard, Amer. Journ. Sci., vol. 23, 1907, p. 379. 

 George P. Merrill, Mem. Nat. Acad. Sci., vol. 14, 1916, p. 10. 



EL NAKHLA EL BAHARIA, EGYPT. No. 426. 



Stone, A. Fell June 28, 1911. Two stones, one a nearly complete 

 individual, with black, shining crust, weighing 117 grams, and one 

 fragment weighing 52 grams. About 40 stones fell, weighing col- 

 lectively nearly 10 kilograms, scattered over an area of some 4^ kilo- 

 meters in diameter. Of peculiar interest, as this is the first recorded 

 Egyptian fall. The stone is further unique in mineral and chemical 

 composition, consisting mainly of green diopside and olivine. (See 

 pi. 3, fig. 1.) The chemical composition as given by Prior is: 



Per cent. 



Silica (SiO^) 48.96 



Titanic oxide (TiOs) .38 



Alumina (AUOs) 1- '^4 



Chromic oxide (Cr203) -33 



Ferric oxide (Fe^Oa) 1-29 



Ferrous oxide (FeO) 19.03 



Manganous oxide (MuO) .09 



Lime (CaO) 15.17 



Magnesia (MgO) 12.01 



Soda (Na^O) -41 



Potash (K2O) -14 



Sulphur (S) -06 



Water at 110° • 07 



100.28 

 Specific gravity, 3.47. 



No barium, strontium, or zirconium detected. 

 Gift of Geological Survey of Egypt. 

 Reference.— Q. T. Prior, Min. Mag., vol. 16, 1912, p. 274. 



EMMITSBURG, FREDERICK COUNTY, MARYLAND. Nos. 279, 414. 



Iron, Om. Two pieces, weighing 7 and 14 grams from a mass the 

 original weight of which is not known, and of which only 177 grams 

 appear to be now in existence. Found in 1854. 



ENSISHEIM, UPPER ALSACE, GERMANY. No. 506. 



Stone, Ckb. A 200-gram fragment, with crust, from a stone which 

 fell on November 16, 1492, and is believed to be the oldest known 

 meteoric stone extant. Fletcher refers to it in his " Introduction to 

 the study of meteorites" (edition of 1908, p. 19) as follows: 



The oldest undoubted sky-stone still preserved is that which was long sus- 

 pended by a chain from the vault of the choir of the parish church of En- 

 sisheim in Elsass, and is now kept in the Rathhaus of that town. The follow- 

 ing is a translated extract from a document which was preserved in the church : 



On the 16th of November, 1492, a singular miracle happened, for between 

 11 and 12 in the forenoon, with a loud crash of thunder and a prolonged noise 



