Meteorites from New Mexico, 333 



related to the irons of Augusta County, Virginia ; Whitfield 

 County, Georgia, and Washington County, Wisconsin, It is of 

 characteristic octahedral structure, and the Widmanstiitten 

 figures'are made up of kamacite (Balkeneisen or beam-iron), i. e., 

 iron with little nickel, enveloped in taenite (Bandeisen), i. e.t 

 iron rich in nickel, and plessite (Fiilleisen). On the single cut 

 made, one field of dark plessite measured 17 by 8 mm., the 

 kamacite from 5 to 2 mm. in breadth. The taenite was abun- 

 dant and brilliant. This is perhaps one of the most beautiful 

 etching irons ever found, as the print from the large section will 

 show. (Folding Plate XXVI.) Nearly all the large mass has 

 been cut into slices, and the iron is seen to be very homogeneous 

 throughout, with the exception of an occasional space measuring 

 1 to 4 mm. across. One of these spaces, near the centre of the 

 mass, was evidently formed by the shock of disruption. In a few 

 instances this explanation is verified by a palpable curving of the 

 Widmanstatren figures, showing that nearly every part of the 

 thick mass was twisted and wrenched, when it burst with such 

 tremendous force. The ruptures on Nos. 1 and 3 show large 

 patches of troilite. In cutting No. 1 large streaks of this metal 

 and schreibersite were observed, the largest of which was 10 cm. 

 long and 4 mm. wide. 'Two of the streaks, 10 cm. apart, ran 

 parallel to each other in peculiar crescent like shapes. 



Olivine was observed at the upper end of No. 1, a surface 

 about 10 cm. square being completely filled with it. The color 

 in some instances was brownish-golden, or rich yellow, and as 

 plentiful as in the "Pallas Iron." The largest grains observed 

 measured from 8 to 14 mm., and some of these pieces yielded per- 

 fect gems over 4 mm. in width. 



I was kindly informed by Dr. Whitman Cross, of Denver, Col., 

 that on Oct. 6th, 1884, a meteorite was presented to the Colo- 

 rado Scientific Society, with descriptive remarks, by Mr. Richard 

 Pearce, of the Boston and Colorado Silver Mining Company. It 

 was sent to the Company from Albuquerque, New Mexico, as 

 silver bullion, and could not be traced further back, although it 

 was probably found in the vicinity of the place from which it 

 was forwarded. Its weight, before cutting, v>as about 2.5 kilo- 

 grams, and its dimensions were 45x80x100 mm. 



