"We have always urged that it was the fumes of illuminating gas, rather than the dry air of heaters, which rendered the cultivation of window plants so difficult. How injurious these fumes may be, may further be inferred from the following from Weekly Notes - a supplement, by the way, to the well-known Penn Monthly, of Philadelphia. The Editor, is referring to Edison's electric light, and says: " Still another advantage will be the saving of book bindings in libraries. At present our valuable russia, morocco and calf bindings steadily deteriorate in value, if kept in rooms where gas is burned. This is one reason why some of our most important public libraries are always closed at sundown, while in some private libraries candles are used to the exclusion of gas. The electric light gives out no heat, and no chemical substances. It is as cool in summer as even Philadelphia or St. Louis would wish".