118 Scetentific Intelligence. 
These results differ greatly from those obtained by Berzelius. 
Rose, after 
much consideration adopts the formula TaOe for tantalic acid, which gives 
in connection with the above results 860°26 (O=100) or 68°82 (O=8) 
for the equivalent of the metal. The author obtained a bromid of tan- 
talum by passing the vapor of bromine over an ignited mixture of tan- 
talic oe and carbon. ‘The bromid has a yellowish color, and resembles 
the chlorid; water decomposes it into bromhydric acid and tantalic acid. 
Rose did not succeed in obtaining a ee iodid of tantalum.— 
Pogg. Ann., xcix, 65, August, 1856. 
Il, MINERALOGY AND GEOLOGY, 
1. Description of a new Meteoric Iron from Chili, containing Native 
; id 3 an account of a fall of a large mass of Meteoric Iron at Cor- 
rientes in South America ;* by R. P. Grea, Esq., (Phil. Mag., July, 
1855.)—(1.) A = rt time since I urchased a mass of meteoric iron 
enteen 
cup-like, ete convex or hollo at) ak on one side, and the ex- 
te — more or less covered with small angular and conchoidal 
project Tt was found by Mr. Greenwood, Reporter of Mineral Prop- 
Aon is fo Whe ao of February, 1840, on the desert of Tarapaca, eighty 
miles northeast o reat et and Sates miles from Hemalga ; at 
a = 
* - - 93°41 93°48 
Nickel, - - ave 4°62 4°56 
obalt, - - - 0°36 0°37 
Manganese, - - - 0:20 0°18 
Phosphurets, - - 1-21 1°26 
Chromium, - - - trace trace 
99°80 99°85 
In general ist oye it therefore closely resembles the majority © of 
meteoric irons hitherto analyzed. Iam unable at present to say if i 
contains Schreibersite. 
e specific gravity of a slice weighing six ounces, containing, how- 
baalg cavities and other A bapa’ I found to be about 6°5. For meteoric 
Se 
rfectly ho omogencous structure, but was in many aoe more or 
oneycombed with cavities, some of which acinaly conininet what ap- 
peared to be pure e lead! In some the lead was not larger than a pellet 
and did not fill the entire Sari contained in its in others et entire 
cavity was filled with lead, in size equal to a pea. Professor She pard of 
* From the Liverpool Literary and Philosophical Society’s Journal. 
= 
; Vee 
cen ae 
