210 MEMOIRS NATIONAL ACADEMY OF SCIENCES, VOL. XIII. 



From this composition it would appear that the mass is probably made up of uui- and bi-silicates, and contains an 

 olivine, a pyroxenic mineral, and a feldspar, besides chromite, troilite, and a very small amount of nickeliferous iron. 



It seems to belong to the class of meteorites that Prof. G. Rose calls Howardite, and which he describes as being 

 granular mixtures of olivine, with a white silicate (anorthite?) and a small amount of chromite and nickeliferous iron. 

 Thisclass, according to Rose, includes the stones from Luotolaks, Bialystok, Massing, Nobleborough, and Manegaum. 



Meunier 2 classes Frankfort as a howardite, although he states that Rammelsberg classes it 

 as an eukrite on account of lack of olivine. Meunier, however, states that some specimens 

 show olivine plainly and that all the other characters are those of the howardites. 



The stone is distributed, the Yale and Harvard collections possessing the largest pieces 

 (Yale 255 gr., Harvard 127 gr.). 



BIBLIOGRAPHY. 



1. 1869: Brush. Contributions from the Sheffield Laboratory of Yale College, No. 21. On the meteoric stone which 



fell December 5, 186S, in Franklin County, Alabama. Amer. Journ. Sci., 2d ser., vol. 48, pp. 240-244. 



2. 1884: Meunier. Meteorites, pp. 286 and 291. 



Franklin County, see Frankfort. 



Frederick County, see Emmittsburg. 



Fulton County, see Rochester. 



Gargantillo, see Tomatlan. 



Garret County, see Lonaconing. 



Gettysburg, see Mount Joy. 



Gilpin County, see Russell Gulch. 



Gibbs meteorite, see Red River. 



FRANKFORT. 



Franklin County, Kentucky. 



Latitude 38° 8' N., longitude 80° 40' W. 



Iron. Medium octahedrite (Om) of Brezina; Thundite (type 19) of Meunier. 



Found 1866; described 1870. 



Weight, 11 kgs. (24 lbs.). 



This meteorite was first described by Smith, 1 as follows: 

 The Franklin County meteoric iron was first brought to my attention in a blacksmith shop in Frankfort, Kentucky. 

 It was carried there to be tested in regard to its quality as iron; being supposed by its discoverer to indicate an iron 

 mine. Mr. Nelson Alley became possessed of it, and kindty presented it to me. 



It came from a hill 8 miles southwest of Frankfort, latitude 38° 14' N., longitude 80° 40' W. from Greenwich, and 

 was discovered in 1866. It passed into my possession in 1867, and was then described by me, but the manuscript 

 was lost after its leaving my hands, and the original notes were misplaced; the notes have been recently discovered, 

 and the iron again analyzed. 



Its form is somewhat globular, with a highly crystalline structure. Its weight was 24 pounds; and this appears 

 to have been its original weight, only a few flakes having become detached by the rusting through of the fissures. 

 Specific gravity, 7.692. Its composition when perfectly freed from rust and earth is — 



Iron 90. 58 



Nickel 8. 53 



Cobalt 36 



Copper, minute quantity. 



Phosphorus 05 



99.52 

 having, as will be seen, the usual composition of meteoric irons. 



Brezina 2 included Frankfort in the octahedrites with medium lamella?, and gives the 

 width of the lamellae as 0.1 mm. 



Huntington 3 describes a specimen of the meteorite in the Harvard collection weighing 7.260 

 gr., which shows an octahedral cleavage form. He states that a large part of the surface is 

 covered with a crust and regards the "crystal" as a "fragment of an iron meteorite broken up 



