THE DENILIQUIN OB BAEEATTA METEOEITE. 103 



quantity of a light grey powder was thus obtained, which, on 

 analysis, proved to be a silicate of magnesia, containing some 

 iron, and is probably a bronzite. The amount obtained, after 

 much trouble, was very small indeed. 



NICKELIEEEOirS lEON. 



To ascertain, roughly the proportion of this, a mass was broken 

 off and powdered in a steel diamond mortar, and the powder 

 passed through a fine muslin sieve, to retain the flattened scales 

 of malleable metal. 



In the first experiment 12'0618 grm. of powder was obtained, 

 and only "0768 grm. of metal, or about '063 per cent. 



In the second experiment 16'3170 grm. of powder was fur- 

 nished, and •1408 grm. of metal, or about "086 per cent. 



Thus the proportion of nickeliferous iron is seen to be very 

 small indeed. 



Cobalt is absent from this alloy of iron and nickel. 



MAaNETIC POETION. 



In order to ascertain the proportion of the non-magnetic to 

 the magnetic portions of the meteorite, 25 grammes were pow- 

 dered ; this gave 2 grm. of magnetic powder, or about 8 per cent. 

 This included the total magnetic mineral. It was found that the 

 magnet did not afford a completely satisfactory means of separa- 

 tion. 



In the main, this part was found to consist of sulphide of iron, 

 with the nickeliferous iron. 



KOK-MAGKETIC POETION. 



Grave off a copious evolution of sulphuretted hydrogen on the 

 addition of hydrochloric acid. Mainly consisted of silicates of 

 magnesium, aluminium, and iron and sulphide of iron. Calcium 

 absent. Not entirely soluble in hydrochloric acid. The residue 

 contained silicates of iron, a little aluminium, and a large quantity 

 of silicate of magnesium. 



From the foregoing it will be seen that this particular meteorite 

 consists of about 92 per cent, of silicates of magnesium, iron, and 

 alumiuium, and about 8 per cent, of magnetic minerals. The 

 proportion of nickeliferous iron is small in the extreme. 



It is my intention to further investigate this meteorite, both 

 with regard to its chemical composition and physical constitution, 

 and I hope to have the pleasure of shortly laying before you the 

 results of a complete quantitative analysis of it, my only regret being 

 thati cannot do so on this present occasion; but the examination of 

 such bodies presents so many difficulties, and takes up so much 

 time, that I have not yet been able to do so, and the above 

 must be regarded merely as a preliminary note upon the subject. 



