Health is a subject in which every individual is inter- ested.
How to secure it, how to protect it from impairment by poisonous substances and other detrimental agents, gives man the most anxious thoughts of life, and the philanthropist his most benevolent study. One of the ingredients of amalgam is quicksilver, which will rapidly oxidize when exposed to the air. Plants that are exposed to the vapor of quick- silver in a close room will perish in a few days. It is but a few years since a merchant ship left San Fran- cisco, and in her cargo was a large quantity of quicksilver. There it came in contact with bilge water, by which it was soon oxidized, and its vapor permeated the hull of the ship.