Vo ee 
or 
Fusion of Iridium and Rhodiwn. : Oe 
stratified rocks which exists in this part of Texas.. From the 
facts observed in Texas, we derive additional confirmation of the 
hypothesis ong since made with great sagacity by M. Leopold 
von Buch and never refuted, that the oolite series of Europe 
have no equivalent on the American continent. _ + ai 
In the course of this summer I hope to extend my investiga- 
tions to other parts of the country, and may be able then to give 
your readers some more satisfactory information about its geolog- 
ical relations. ; 
Arr. XX XIII.— Fusion of Iridium and Rhodium ; by R: Hare, 
M. D., Prof. of Chemistry in the University of Pennsylva- 
_ Tats communication respects mainly my success in fusing 
both iridium and. rhodium, neither of which in a state of puri- 
ty, had been previously fused. It may be supposed that the glob- 
ule of iridium, obtained by Children’s colossal battery, forms an 
exception; but the low specific gravity, and porosity, of that 
bule, may justify a belief that it was not pure ; and at any 
Tate, the means employed were of a nature not to be at command 
for the repetition of the process—so that iridium might as well 
be infusible, as to be fusible only by such a.battery. 
The first specimen of the last mentioned metal, on which I 
Operated, was one given me by Mr. Booth, a former pupil of 
Wéhler, whom he had assisted in obtaining it by the excellent 
Process devised by that distinguished chemist. This specimen 
Se 
*T0 THE EDITORS. 
Gentlemen—The facts and observations of which the accompanying comraunica- 
tion is intended to give an account, having been communicated, sh wt — 
at the meeting of the American Philosophical Society, Fs ‘ete ny 
numbers of their bulletin in the spring and summer of 1842. spo saadat Pag ee 
work, I believe they have not yet been published. Under these comtian Se 
trust that a communication embodying the statements sxe a 3 sit 
ntioned. mav be d 3 } f bl ie 
lately allowed Mr. Goetz, one of the contributors to the “ Revue Scientifique,” 
Published at Paris, to make therefor a translation of this article, accompanied by a 
titable letter to the editors. ¥ 
wah am, gentlemen, with esteem, yours very truly, R. Harr. 
: 
