Scientific Intelligence. ¥ 253 
Iron, . : ; P é ) 85°3 
Nickel, ; ; d é 14:7 
100: 
The earthy constituent of this stone, like that of the Iowa 
meteorite, is decomposed by concentrated hydrochloric acid, and 
like it, appears to ee a tersilicate of the protoxyd of iron and mag- 
nesia, a mineral which though frequent in meteoric stones, has 
never yet been distinctly recognized, and which in a future paper 
on American Meteorites, I shall more particularly describe under 
the name of Howardite, after the Hon. Mr. Howard, that celebra- 
ted chemist, who was the first British writer whose labors con- 
tributed to elucidate the eight of these extra-terrestrial bodies. 
New Haven, Aug. 16, 184 
SCLENEIV IC INTELLIGENCE. 
I. Cuemistry anD Puysics. 
1. Ice, a Conductor of Galvanism.—In experimenting with a 
Grove’s battery of eighteen cups, I left the whole standing over night 
the poles not being connected, or the circuit not being closed. There 
was no action going on, or at least, no hydrogen was evolved in the 
cups. Owing toa sudden change of weather, the liquid in the cups 
was found frozen in the cups next morning. In each of the ‘ia 2 
had separated the ice from the platinum, when, in each i instance, it ‘te 
d. 
mediately cease EWEY. 
rove’s: Battery with ee Water used with the Zine cup.— 
Grove’s battery of eighteen cups in the usual way, only using water 
instead of diluted sulphuric aci The whole was quickly put in 
operation and the poles connecte d. 
1.) In the first minute there was the indication of only the feeblest 
action, either in evolving hydrogen, or seman iron filings magnetic. 
two or three minutes the action had sensibly gee as 
shown in both these results, and in tn to sixty minutes the ac 
was quite powerful. With a large helix the large dancing iron was oie 
to play finely. The action had now attained its maximum power 
( : 
used up. As vctiahgiarnaeell ob was eae abe itrate of 1 mercury was 
formed, for the crystals vaticg ied oxyd of mercury. C. D. 
Vermont Medical College, March, 1848, 
Srconp Series, Vol. VI, No. 17.—Sept., 1848. 33 
