Report on Meteorites. 77 



rent. The black coating of oxyd of iron, so often investing me- 

 teoric iron, is here nearly- replaced by broad patches of a thin, 

 yellowish, ochrey brown incrustation. 



Sp. gr. =7-548. It is close grained and perfectly compact, 

 taking a very high polish, and exhibiting at the same time, a 

 color rather whiter than that of steel. It shows no crystalline 

 figures on being corroded with nitric acid ; although on very close 

 inspection, minute, whitish spots, (isolated and collected into 

 patches,) may be seen here and there, scattered without order 

 over the surface. When broken, it presents a fine granular tex- 

 ture, attended by a high silvery lustre. 



Dr. Troost found the mass he obtained to contain, iron 87-58, 

 nickel 12-42, remarking however that the ratio of the nickel given 

 was probably too high, and that the compound might contain 

 other ingredients. My own specimen affords me, iron 85-30, 

 nickel 14-70, with traces of calcium, magnesium and aluminium. 



4. Claiborne, Alabama.— -Vol. xxxiv, p. 332, (1838.) Vol. 

 xlviii, p. 145,(1845.) 



5. Livingston county, Kentucky. — Vol. ii, ii Ser., p. 357, (1846.) 



6. Dickson county, Tennessee. — Vol. xlix, p. 337, (1845.) 



7. Texas, {Red River.)— Vol. iii, p. 44, (1821.) Vol. viii, p. 

 218, ( 1824. ) Vol. xvi, p. 217, ( 1830. ) Vol. xxvii, p. 382, ( 1835. ) 

 Vol. xxxiii, p . 257, (1838.) Vol. xliii, p. 358, (1842.) Vol. ii, 

 "Ser., p. 372, (1846.) 



8. Burlington, Otsego county, N. Y. — This mass (originally 

 loO lbs. in weight) was described by Prof. Silliman, Jr., in Vol. xlvi, 

 p. 401, ( 1844.) It was ploughed up by a farmer, near the north line 

 of the town, sometime prior to 1819. Portions were cut from it, 

 from time to time, by the discoverer's blacksmith, for agricultural 

 Use s ; until its weight was diminished to about a dozen pounds, 

 Jjhen it fortunately fell into the hands of Prof. Hadley, of Geneva, 

 N> Y., to whom I am indebted for a conical lump, (weighing nine 

 pounds,) which must have formed a somewhat pointed extremity 

 of the original mass. From the base of this, a slice was taken, 

 leaving a lump of five pounds of the annexed form. Its sides 

 show for the most part, the natural crust of the iron ; but where this 

 *s not the case, the surface has been cut and polished, or is coarsely 

 crystalline with large tetrahedral and sub-hackley faces, occa- 

 sioned by the breaking off of what were apparently projecting 

 Prongs. Its polished faces show a very high lustre, with a color 

 °f nearly the same whiteness as German silver. Held at a 

 Proper angle, they discover very distinctly the same crystalline 

 characters, which are still more distinctly brought out by the ac- 



^ces, which have acted upon masses not perfectly homogeneous either in compo- 

 ,1'°? °r in density. For this reason perhaps, the Lockport iron, which is very 

 "Co charged with amvgdaloida! kernels of magnetic Iron pyrites, presents an un- 

 ^mmonJy p i Ued and y Rgged surface. 



