SCIENTIFIC NEWS. 137 



PALLADIUM, OR NEW SILVER, 



JIas thefe Properties among others, that Jliezv it to be a new 

 noble Metal. 



1. It diflblves in pure fpirit of nitre, and makes a dark red 

 folution. 



2. Green vitriol throws it down in the ftate of a regulus 

 from this folution, as it always does gold from aqua regia, 



3. If you evaporate the folution you get a red calx that 

 diflblves in fpirit of fait or other acids. 



4. It is thrown down by quick -filver and by all the metals 

 but gold, platina, and filver. 



5. Its fpecific gravity by hammering was only 1 1.3, but by 

 flatting as much as 1 1.8. 



6. In a common fire it tarnifhes a little and turns blue, but 

 comes bright again, like other noble metals, when ftronger 

 heated. 



7. The greater! heat of a blackfmith's fire will hardly 

 melt it. 



8. But if you touch it while hot with a fmall bit of Sulphur 

 it runs as eafily as Zinc. 



It is fold by Mrs. Fojler, at No. 26, Gerrard Street, Soho, 

 London, In famples of five (hillings, half a guinea, and one 

 guinea each. 



Immediately on the receipt of this paper, ' Mr. Chenevix Examined by 

 went to the place where it was advertifed to be fold, and Mr ' Chenevi ** 

 bought a piece which he fubmitled to the trials propofed by 

 the author of the impofition. Mrs. Fofter, it appears, is only 

 the vender, and totally unacquainted with the perfon who 

 brought the metallic fubftance and the printed paper to her 

 houfe 



In every refpect but one, the alTertions in the paper 

 Mr. Chenevix found to cortefpond with his own experi- 

 ments. The fpecific gravity he found to vary in different 

 pieces from one to two per. cent. 



The refemblance which, in many of its properties, this Sufplcion that It 

 fingular fubftance bore to Platina, induced a fufpicion in the ™^ ontai ' 1 

 mind of Mr. Chenevix that the laft mentioned metal formed a 

 part of the compound, if indeed it was a compound body ; 

 but the effential characters of difference were fo ftriking and 

 2 numerous 



