284 0« the new Metal caltei Chrome, 



lour, and the Giver appears in globules difleminated through 



out its fubftance. 



A, With the nitrate of copper, forms a greenifh preci- 

 pitate. 



B, With the fame folution, gives a chefnut-red precipi- 

 tate. 



A, With the folutions of fulfate of zinc, muriate of bif- 

 muth, muriate of antimony, nitrate of nickel, the muri- 

 ates of gold and platina, produces white precipitates, when 

 thefe folutions do not contain excefs of acid. 



B, With the fame folutions, produces almoft. the fame 

 phenomena j except that the precipitates are for the moft 

 part yellowilh. That of gold is greenilh. 



The Molybdic Acid alone. 



1. The molybdic acid melted with borax gives it & 

 blueifti colour. 



2. Paper clipped in the molybdic acid becomes in the furi 

 of a beautiful blue colour. 



3. The molybdate of lead diflblves in the muriatic acid, 

 and the folution does not aflume any colour even by ebul- 

 lition. 



Acid of the Red Lead alone. 



1. The acid of the red lead melted with borax commu» 

 nicates to it a very dark green colour. 



2. Paper impregnated with the acid of red lead afiumes 

 in the light a greenilh colour. 



3. The red lead diflblves even without the application of 

 heat in the muriatic acid, and the folution has an orange- 

 red colour j but by ebullition it aflumes a beautiful green 

 colour, and there is formed muriatic acid highly oxyge- 

 nated. 



From the phenomena above mentioned, I entertain no 

 doubt that the ~cid '.Inch mineralifes the red lead of Siberia 

 has for its bafis a particular metal, hitherto unknown. If 

 it be compared indeed with all the other metals, there will 



be 



