341 



It is not possible to form any opinion as to the mineral composition 

 of the insoluble portion of the Meteorite, as it is doubtless co mpose of 

 more than one unknown mineral substance. 



If we collect into one view the preceding results, taking a mean of 

 all, we obtain the following mineralogical composition for the Dun- 

 drum Meteorite : — 



IY. Mineralogical Composition of Dundrum Meteorite. 



1. Nickel-iron, 20-60 {^V • **g 



2. Protosulphuret of iron, . . . 4*05 



3. Chrome-iron, ...... 1*50 



4. Mineral soluble in muriatic acid, ) 33-08 



probably chrysolith, / 



5. Minerals insoluble in muriatic 



acid, } 40 ' 77 



100-00 



ON THE SHOWER OF AEROLITHS THAT EELL AT KILLETER, COUNTY OE TYRONE, 

 ON THE 29TH OE APRIL, I 844. 



On the 29th of April, 1844, a shower of Meteoric Stones fell, in the 

 sight of several people, at Killeter, near Castlederg, county of Tyrone : 

 they broke into small fragments by the fall, one piece only being found 

 entire ; it was (according to the testimony of a resident) " about as large 

 as a joint of a little finger." The stones were hot when found. The 

 account given by three gentlemen, who, however, did not actually see 

 the shower fall, was that they were at a distance of three or four miles, 

 up the hills in the neighbourhood ; it was a fine sunny afternoon (three 

 or four o'clock); they heard " music" towards Killeter, which they 

 supposed to proceed from a strolling German band which they knew to 

 be in the neighbourhood ; they are under the impression that they heard 

 the music several times in the course of the evening ; they remember 

 also to have noticed clouds in the direction of Killeter. On reaching 

 Killeter, the same evening, they were told of the wonderful shower of 

 stones which had spread over several fields. I received the fragments 

 of these stones from the Rev. Dr. M'lvor, Ex-Fellow of Trinity College, 

 Dublin, and Eector of Ardstraw * he writes to me that "it is now very 

 difficult to get either a specimen of a stone, or any very distinct intelli- 

 gence of them : even the very rumour of them has nearly died out, and 

 you might ask intelligent middle-aged men about the neighbourhood 

 who had never heard them mentioned." He adds that the people of 

 that locality are very "uncurious," and that if there were a veritable 

 burning bush thereabouts, few would " turn aside to see." 



The largest specimen given to me by Dr. M'lvor weighed 22*23 grs. 

 in air, and 16*32 grs. in water, showing that its specific gravity is 

 3*761. Both it and the smaller fragments presented the usual black 



R. I. A. FROC VOL. IX. 2 Z 



