There are several arsenic works in this district. The mundic (mispickel-arsenic), which was formerly cast aside from the copper mines as worthless, is calcined. The works consist in the crushing of the rock, it being chewed up by machinery; then the broken stone is gone over by girls, who in an inclined position select that which is profitable, and cast aside the stone without mundic in it. This is then ground and washed, and finally the ground mundic is burnt in large revolving cylinders. The fumes given off in calcining are condensed in chambers for the purpose, and deposited in a snow-white powder. The arsenic is a heavy substance with a sweetish taste, and is soluble in water. In the process of calcining a large amount of sulphurous acid is given off--a pungent, suffocating gas--and this, escaping through the stack, is so destructive to trees and grass, that it blights the region immediately surrounding. When, however, a stack is of sufficient height the amount of damage done to herbage is greatly reduced, as at Greenhill, where there is a healthy plantation within two hundred yards of the stack. When the workmen have to scrape out the receivers or condensers, the utmost precaution has to be taken against inhaling the dust of arsenic. The men engaged wear a protection over the mouth and nostrils, which consists in first covering the nostrils with lint, and then tying a folded handkerchief outside this with a corner hanging over the chin. When the arsenic soot has been scraped out of the flues and chambers in which it has condensed, it is packed in barrels. Every precaution possible is adopted to reduce danger, but with certain winds gases escape in puffs from the furnace doors, which the men designate “smeeches,” and these contain arsenic in a vaporised form, which has an extremely irritating effect on the bronchial tubes. One great protection against arsenical sores is soap and water. Arsenic dust has a tendency to produce sore places about the mouth, the ankles, and the wrists. Moreover, if it be allowed to settle in any of the folds of the flesh it produces a nasty raw. On leaving their work the men are required to bathe and completely cleanse themselves from every particle of the poison that may adhere to them. As touching inadvertent arsenical poisoning, I will mention a circumstance that may be of use to some of my readers.