only that the tree of tin will have more lustre. In these experiments, it is surprising to observe the lamina shoot out as it were from nothing; but this phenomenon seems to proceed from a galvanic action of the metals and the water.

THE SILVER TREE.

Pour into a glass globe or decanter, 4 drs. of nitrate of silver, dissolved in a pound or more of distilled water, and lay the vessel on the chimney piece. Now pour in 4 drachms of mercury. In a short time the silver will be precipitated in the most beautiful arborescent form, resembling real vegetation. This has been generally termed the Arbor Dianna.

Put thirty grains of phosphorus into a florence flask, with three or four ounces of water. Place the vessel over a lamp, and give it a boiling heat. Balls of fire will soon be seen to issue through the water, after the manner of an artificial fire-work, attended with the most beautiful corruscations.

Write upon paper with a diluted solution of muriate of copper; when dry, it will not be