296 ' EEPOET— 1881. 



tlie size of filberts, are met with. Magnetite and graphitoid are fonnd 

 coating the troilite. The Lexington iron closely resembles the Bohumilita 

 iron, foi;nd in 1829, and presei'ved at Prague, especially in the two etched 

 surfaces : they, in fact, ai'e the only two which strikingly show the moiree 

 inetallicpie lustre ; the crystalline bars in the Lexington iron are nearly twice 

 as large as those in the Bohemian specimen. The included spaces are filled 

 "with extremely minute lines of tiinite, ci-ossing each other at all angles 

 from 90° to 150°. Its density is 7 ; that of homogeneous fragments being 

 7'405, and that of the troilite 4'77. Analj^sis showed it to consist of: 



Iron 92-416 



Nickel 6-077 



Cobalt 0-927 



Insoluble matters 0-264 



Tin a trace 



Phosphorus a trace 



99-684 



1881, March 1-i, 3.35 p.m. — Fennyman's Siding, Middlesbrough, 



Yorkshire.^ 



My friend, the esteemed Secretary of our Committee, has drawn 

 attention to the fall of a meteoric stone, near Middlesbrough, during the 

 early months of this year. The day was bright, the air calm, and the sun 

 shining when it fell, about 19 yards from the signal-box and 48 from the 

 spot where two or three men were standing, and when picked out of the 

 bole which it had made in the ground it was still -^'arm. He writes : ' It 

 is a beautifully perfect meteorite, of a low pyramidal or shell-like shape, 

 measuring about 5 inches by 6, and about 3 inches high, and it weighs 

 3^ lbs. The grey tufaceous stone, of which it consists internally, is, as 

 usual, completely glazed over, or enveloped in a thin black molten crust, 

 which hides from the eye its true stony character, the latter being only 

 visible here and there at its grazed edges.' 



A portion has been sent to the British Museum for analysis. With 

 the exception of this little piece removed, the almost undisfigured 

 meteorite was shown at York in the Museum of Scientific Objects at the 

 jubilee meeting of the British Association. It is now deposited in the 

 York Philosophical Society's Geological Museum. 



Appendix II. 



On the Fall of an Aerolite near Middleshrougli, Yorhshire, on March 14, 

 1881. By A. S. Herschel, M.A., F.B.A.S. 



The meteoritic stone-fall recorded in this paper took place at 3.35 

 p.m., on a clear and bright, but rather cold and windy, afternoon in 

 March last, on a part of the North-Eastern Railway Company's branch- 

 line from Middlesbrough to Guisbrough, at a point where a short siding 

 and signal-box upon the line, established in connection Avith some brick- 

 fields adjoining it, are known from them by the name of Pennyman's 

 Siding. The place is about a mile and three quarters from Middles- 

 brough along the Guisbrough branch line, and a few miles on the 



' A. S. Herschel, JVewcastle Bcdhj Chronicle, March 30, 1881, Newcastle-on-Tyne. 



