Dr. Walter Flight — History of Meteorites. 367 



1813, September 10th.— Adare, etc., Co. Limerick, Ireland. 1 



This meteorite, originally investigated by J. Apjohn, 2 has been ex- 

 amined by E. Apjohn, who finds that it contains a trace of vana- 

 dium. The date which he assigns to the fall of this stone, 1810, 

 appears to be that of another Irish meteorite, which fell at Moores- 

 fort, Tipperary. The nickel-iron has the composition : 



Iron = 85-120 ; Nickel = 14-275 ; Cobalt=0-602 ; Phosphorus = Trace ; =99-997 

 and the result of the treatment with acid : 



Si0 2 A1 2 3 FeO MnO CaO MgO Na 2 K 2 P„0 5 



A. Soluble 42-91 2-35 16-93 6-26 5-34 24-32 0-29 0-02 = 98-42 



B. Insoluble ... 59-48 3-24 7'94 8-84 4-62 13-17 1-86 0-30 trace = 99-45 



The mineralogical composition of the stone is stated to be : 

 Nickel-iron 19-07 



Chromite 

 Magnetic pyrites 

 Soluble silicate 

 Insoluble silicate 



1-75 



6-54 



35-44 



37-07 



99-87 

 The chromium oxide present as chromite is not mentioned at all 

 in the above analysis. The iron sulphide is probably present as 

 troilite (iron monosulphide), as according to the older analysis 

 the greater part of the sulphur is in the part which is not attracted 

 by the magnet. There the ratio is given as Fe == 3-92, S = 2-04 ; 

 the per-centages for troilite, using the sulphur as the basis for the 

 calculation, would be Fe = 3*57, S = 2*04 ; and for magnetic 

 pyrites Fe = 3-12, S = 2-04. 



In an obliging letter received from the author he informs me that 

 the amount of vanadium present was too small to allow of a quanti- 

 tative estimation being made. He believes that in amount it is about 

 one-half that met with in the trap-rocks of Ireland and Italy, which 

 have recently been examined by him. He is inclined to the belief 

 that the vanadium is present as an oxide associated with the chromite, 

 " for we know vanadium occurs in terrestrial chrome iron in compara- 

 tively large quantities." 



i 

 1814. — Lenarto, near Bartfeld, Saros, Hungary. 3 



Boussingault, who some time since found nitrogen in this iron, has 

 recently examined it with the view of determining whether it con- 

 tains carbon in a state of combination with the metal. His analysis, 

 given below, did not detect the presence of that element in any form. 

 Iron = 91-50; Nickel = 8-58; Insol. Residue = 0-30 ; Copper =trace. Total = 100-38. 



It was in this meteoric iron, it will be remembered, that Graham 

 made the interesting discovery of the presence of hydrogen condensed 



1 E. Apjohn. Jour. Chem. Soc. [2], xii. 104. 



2 J. Apjohn. Trans. Irish Acad., xviii. 17. 



3 J. Boussingault. Compt. rend, lxxiy. 1287. Ann. Chim. et Phys. xxviii. 124. 

 Chemical News, No. 688, 59.— M. Salet, Revue Scientifque, 1872, March 9th. The 

 Academy, iii. 113. 



