J. S., Harrisburg, Pa., asks: "Is heating a rose-house with wood instead of coal likely to have any injurious effects on the plants? If so, what is the cause? An answer through the columns of your magazine will much oblige".

[Wood is not popular with gardeners because it burns too fast, but if properly banked with ashes when half burned, a thick block will keep a good heat as long as coal will. There are no gases that we know of escaping from burning wood, likely to be very injurious to vegetation, not nearly as much as from coal, in which there is always some sulphur. - Ed. G. M].