338 H. A. Ne ewlon on two Meteoric Firebails. 
ana of copper. For analysis, a portion was prepared i 
ner as the a sulphid of ped se The cchaclies obtained 
was a dark-grey, perfectly homogeneous powder. Two arsenic determin- 
ations were ee in the same way as in the last analysis. 
I, 1:1215 grms. substance gave 1°4189 
2Mg0, NH40, mete Heron hs ae in vacuo). 
If. 0°3235 grm. substance gave 0 
2MgO, NH40, AsO5+Ho (dried at = a 
Calculated. | 
5Cu, 158°5 67°88 L I. | 
As, 75: $212 32°78 82°33 : 
233°5 100-00 | 
Pulverized ae boiled half an hour with acetate of lead, Eee 
tated no lead. With acetate of the protoxyd of iron and acetate of lead, 
it also produced no effect. 
VII. Action of Antimony on the solutions of Copper, Silver and Lead. 
1. Without reducing agents—Pulverized antimony, left three days 1D 
solutions of sulphate and acetate of copper, took up considerable copper, 
in cases. little white oxyd of antimony was also formed. by 
boiling, the action takes place more rapidly, and a large quantity of the 
oxyd is formed. 
As already observed by Fischer, antimony precipitates metallic silver 
from the nitrate. Towards the os of the action, some antimon nid of 
silver is also formed, according to Fischer. 
‘Antimony, boiled a long time with acetate of lead, produced no effect. 
2. With reducing agents —Pulverized koi left three days in 8 
lation of sulphate if copper, mixed with sulphurous acid, combined with 
considerable copper. No white oxyd me et seen. Tn acetate of cop 
d. 
t was produce of 
Antimony, boiled with acetate of the protoxyd of iron and acetate 
lead, did not throw down any lead. 
a 
Art. XXXII—An Account of two Meteoric Fireballs, observed i” 
the United States, Ap 2 and Aug. 6, 1860, with computation 
of their paths; by H A. Newton, of Yale College. 
I. Meteor of Aug. 2, 1860. 
THIs magnificent fireball Age about five minutes “im 
ten, P. M., Cincinnati mean time, and was seen over the w oe 
region from Pittsburg to Mae | see and from Charleston on 
. Louis, an area of nine hundred miles in extent. Thro ppm 
kindness of friends, and from newspaper notices, I have 
able to collect much information respecting it, the most ‘ed 
ant of which is presented in the following s I wis ‘, 
express my indebtedness to Mr. Robert Brown, Jr., of Cincinnt 
for valuable assistance. Materials which he had collected fr 
his own use he has generously placed at my disposal. 
