1134 The new Mineral Newboldile. [Nov. 



Nitrate of Cobalt on Platina. — A very pale and somewhat dirty 

 lilac colour, not approaching to the blue of alumina at all. 



With Borax, in considerable proportion of assay to the flux, and at 

 both flames a perfectly colourless and transparent glass. 



With Soda. — A dead white enamel : clear red glass in the flame. 



Phosphate of Soda. — Opaque pearly bead, which when very small is 

 a semi-transparent crackly one. 



Via Ilumida. — It is insoluble or nearly so in sulphuric and in nitric 

 acids, which last sometimes gelatinises it. 



It is insoluble in the fixed alkalies and ammonia, but seems partly 

 so when newly precipitated, in carbonate of ammonia. 



Its proper solvent is boiling nitro-hydrochloric acid, with which it 

 crystallises when a nearly saturated solution, in fine brilliant silky or 

 pearly points and needles, which have a sweetish astringent taste like 

 the salts of Glucina and Yttria. 



The fcrro-cyanate of Potassium does not precipitate it. 



When tried by zinc the blue precipitate of Titanium is not produced. 



No precipitate was obtained in boiling it with sulphate of potass. 



It is in all states when freed from Iron perfectly colourless. 



From the minute quantities in which I have been able to obtain the 

 pure earth, and the almost microscopic nature of the assays and testings, 

 and the different characters it presents from all the known earths, I 

 cannot venture at present to pronounce what it may be ; and indeed 

 would not even now publish my analysis did I not conceive it just 

 towards Captain Newbold to do so, for there is no sort of doubt that, 

 whatever the earth may be, he has discovered a new and a very re- 

 markable mineral, which is a double Sulphur et of Iron and an earth ! 

 "We must wait for larger specimens to decide what the earth is. 



The locality of this mineral (which should have been noted at the 

 beginning of the paper,) is in the central range of the Eastern Ghats, 

 between Cummum in Cuddapah, and Gograpilly in Kurnool, a little 

 south of the Cunnama pass. Captain Newbold says of it : — "The forma- 

 tion is the great diamond sand-stone which here passes into arenaceous 

 and argillaceous slates. In the latter occur the veins in which the 

 mineral are found, consisting chiefly of the carbonate of Cerium de- 

 scribed in a former paper, in the Journal. 



" It is associated with lead-ore (galena) which occurs in nests and 



