Analysis of the Meteoric Iron of Louisiana. 219 © 
nia. ‘I'o the residue was added warm water, which dissolv- 
ed the salts of potash, and left the oxide of nickel floating 
in the solution, in the form of a flocculent, apple green pre- 
cipitate. Separated by the filter, dried, ignited and weigh- 
ed, it amounted to 5:8 grs.; which being in the condition of 
the protoxide, equals 4-837 grs. of the metal.* 
. To another portion of the meteoric iron, wei hing 10grs. 
bia "plating Veubel over an alcoholic lamp. It weighed 
12°89 grs.: which in the metallic condition would be 9°002 grs. 
We have, therefore, in the meteoric iron of Louisiana, 
a ae ige ea eer ee og 
PICEU oh i Re Pe of STS, 
99°694. 
EAM APSO. BR epee ere ew ee 
100000. 
The similarity which was before peor to exist, between 
ihe meteoric iron of Louisiana and San a Rosa, in | South 
America, as r ituation and 
egarded tl 
general properties, boighiened as it now appears to be by 
their close agreement in composition,! seems shoe to lead 
to the sarily that they were derived from one and the 
same meteorite, which traversed the atmosphere of our plan- 
et in a direction, lengthwise of the American continent. 
* Since the method for separating t the nickel here adopted had been objected 
e ground, 
the precipitated iron, I examined that precipitate by sage me ‘without ova 
ing any indication that such had been the fact in not ‘: 
that this is not always the case, the experience mf vee Roggersti may pry 7 
ioned, who in his examination of the itburg met ric iron, abe manner, 
unable to detect an any remaining oxide of nickel i — the precipitate by ammonia.— 
Journal fur Chemie und Physick. B. an 
t Pre “mabbeoeie Hon of Fin Rosa, omposed saber? 91-41. and nickel 
8°59.— Ann. de Chimie et de Pigniee;t rag XXV, 
