Then metals contract disease. Science informs us that zinc and tin have been infected, and the infection has spread from sheet to sheet crumbling the metal into powder--the spread of the infection resembling the spread of a plague among animals or plant-life. Science has experimented with copper and iron, and has found that these metals may be poisoned with chemicals, and will remain in a weakened condition until antidotes are administered. Window-glass workers declare that there is such a thing as "glass-disease," that will ruin fine stained glass windows unless the infected panes are removed. The "glass-disease" starts with one pane, and spreads gradually to the entire window, and from there to other windows. Metallurgists have found that when metallic ores are put under certain forms of pressure, they seem to lose strength, and become weak until the pressure is removed. Do these things mean anything to the "Man of the Street?" Another step in the consideration of Life in the Inorganic world, is the realization of the fact that, after all, there is but the very finest line separating the higher forms of Mineral "life," from the lower forms of vegetable life, or the life of those "Things" which we may call either plants or animals. The "Life-line" is being pushed further back every day, by scientific investigation, and the "living" thing of today was the "inanimate" thing of yesterday. We hear much talk in the newspapers about some scientist, or another, "discovering life," or "creating life," in some "inanimate substance." Bless your hearts, you who are alarmed by these reports--no one can "create" life in anything, for it already exists there. The "discovery" is simply the realization of this fact. Science, by means of the microscope, has brought to light forms of "living things," resembling in appearance the fine dust of inorganic minerals. These low forms of life exhibit but the simplest vital processes, the same very closely resembling chemical processes, although just a shade higher in the scale. Living creatures have been found which could be dried and laid aside like dust for several years, and then revived by being immersed in water, when they would resume their vital process as if they had been awakened from a sleep. Forms of life, called "Baccilli" have been discovered that can pass through degrees of heat and cold that can be expressed only by vague symbols or figures, the heat and cold being so intense that the unscientific mind cannot imagine it.