go 6 Mr. Chenevix’s Enquiries concerning the Nature 
ANALYTICAL EXPERIMENTS. 
Exper. i, 2, and g. The converse of the synthetical experi- 
ments l, 2, g, was made, but without any satisfactory result. 
Exper. 4. The converse of Exper. 4 was made without suc- 
cess. I put some mercury into a solution of palladium, and left 
them together for some time. The precipitate which was formed 
was palladium, just as it had been used for the operation. 
Exper. 5. I exposed different pieces of palladium to a very 
violent heat for two hours. In some, a diminution of absolute 
weight, with an increase of specific gravity, took place ; in others, 
neither of these effects was produced. The specimens which I 
had made were chiefly of the latter kind. 
Exper. 6 . Cupellation did not afford any satisfaction respecting 
the analysis of palladium ; but the heat necessary for this pur- 
pose is so great, that I could not place great reliance upon this 
experiment. It is difficult to detach the button from the cupel 
with accuracy. 
Exper. 7. I burned some palladium in oxygen gas. A white 
smoke arose during the combustion, and was deposited upon 
the sides of the glass jar that contained the gas. But this smoke 
was palladium, and not the mercury separated from it. 
Exper. 8. A slip of palladium, which Mr. Davy had the 
goodness to expose, in my presence, to the action of the strong 
Galvanic batteries of the Royal Institution, burned with a very 
vivid light, and a white smoke ; but no mercury was separated 
by this operation. 
There is not any property of this compound which appears 
to me so wonderful, as that which is manifested by these ex- 
periments. I t is a striking proof how unfounded was the opinion 
