288 MEMOIRS NATIONAL ACADEMY OF SCIENCES, VOL. XIII. 



On etching the surface of these sections the Widmanstatten figures are brought out, sharp and distinct; they are 

 typically octahedral, and composed of broad laminae, the kamacite bands being from 1 to 3 mm. in diameter, and up to 

 41 mm. in length, in some cases without a break. 



There are also numerous small streaks or seams of schreibersite, the longest as far as observed being 8 mm. and a 

 trifle less than 1 mm. in width. 



The troilite nodules are likewise surrounded by a very narrow band of schreibersite, which presents a strong con- 

 trast between the silvery white kamacite bands and the bronze-colored troilite nodules. In some few instances a black 

 graphitic substance from 1 to 3 mm. in width is seen surrounding the troilite nodules between the narrow band of 

 schreibersite and the kamacite. The minute hairlike lines commonly called laphamite markings are abundant in the 

 rhomboidal patches known as plessite. These lines are caused by minute alternating layers of kamacite and taenite, 

 plessite, as proved by J. M. Davison , being formed in this way, and not a different nickel-iron alloy as formerly supposed. 



This meteorite was found in the early part of 1896 by a Mexican named Gonzales, who was very reticent for a long 

 tune about giving its exact locality, supposing he had found indications of a valuable mine. But later Mr. T. C. Brown, 

 of Socorro, New Mexico, succeeded in obtaining the mass, and was informed by the Mexican that he had made further 

 search for more pieces but found none. He had picked this piece up about 5 miles southwest of Socorro near the hamlet 

 of Luis Lopez. 



In the autumn of 1896 the mass as found passed into the possession of Mr. A. B. Fitch, of Magdalena, New Mexico, 

 who retained it in his possession until June, 1899, when it was purchased by Professor Ward. 



From its near proximity to the above hamlet we will designate this siderite as the Luis Lopez meteorite, Socorro 

 County, New Mexico. 



An analysis by Mariner and Hoskins, of Chicago, gave: 



Fe Ni Co Si P S 



91.312 8.17 0.160 trace 0.333 0.013 0.012 =100.00 



Specific gravity, 7.7. 

 The meteorite is distributed, Ward possessing the. largest amount, 3,124 grams. 



BIBLIOGRAPHY. 



1. 1900: PRESTON. Two new American meteorites. Amer. Journ. Sci., 4th ser., vol. 9, pp. 283-285. 



LUMPKIN. 



Stewart County, Georgia. 



Latitude 32 3' N., longitude 84 45' W. 



Stone. Crystalline spherical chondrite (Cck) of Brezina. 



Fell 11.45 a. m. October 6, 1869. 



Weight, 357 grams (12.25 ozs.). 



Mention of this fall was made in the American Journal of Science for September, 1870, 1 

 and in the following November a full account was published by Willet 2 as follows : 



In October, 1869, I learned that a meteoric explosion had taken place in Stewart County, Georgia. I immediately 

 requested Hon. John T. Clarke, a resident of the county adjoining Stewart, to inquire whether any stone or stones had 

 fallen, and to endeavor to procure them for Mercer University. Judge Clarke, after considerable labor, was entirely 

 successful in his search; and through him Mr. Barlow, in whose yard the meteorite descended, generously presented 

 it to our museum. To Judge Clarke and to Mr. Latimer I am indebted for the following history of the phenomena 

 attending the descent of the meteorite. 



Mr. J. B. Latimer, of Bladens Creek, Stewart County, has kindly furnished the following particulars of the flight 

 of the body through the air, and of the several explosions which occurred nearly vertically above him: 



"The morning of October 6, 1869, was quite clear, scarcely any cloud being visible, and was quite calm; about 

 10 a. m. the atmosphere grew somewhat hazy, no clouds; at about 15 or 20 minutes before 12 m. a roaring, rushing 

 sound was heard in a northwesterly direction, about 80 above the horizon. In a moment or two it was almost 

 directly overhead, at which point a loud explosion occurred, followed in rapid succession by six other reports, but 

 less in volume than the first, making seven in all. The explosions appeared as loud as a 12-pound cannon at a dis- 

 tance of 10 or 12 miles. These explosions did not occur all at the same point in the heavens, but seemd to emanate 

 from some body moving rapidly to the southeast. After the explosions a peculiar whirling sound was heard, appar- 

 ently produced by some large irregular body moving very rapidly. This also went in a southeasterly direction. This 

 sound was heard for several seconds; many have compared it, and aptly too, to an imperfect steam whistle. I have 

 no precise idea of the time consumed in all this demonstration; some persons say several minutes, but I think 10 or 

 15 seconds would about cover the time. 



" As the larger body was going out of hearing, some moments after the explosions, a smaller one passed to the south- 

 west, with just such a noise as is always produced by a flying fragment of a shell after its explosion or of any angular 

 body cast violently through the air. This piece descended to the earth, distinctly traced in its passage by many per- 

 sons, and struck in the yard of Capt. E. Barlow, which point of contact is, on an air line, about 2.5 miles from a per- 

 pendicular beneath where the explosions occurred. This is the only one known to have fallen in this section. 



