After an examination of many hot-houses, and much study of methods of heating, a plant house has been designed and built which I think is a great improvement. The rafters and caps are of original design, and the entire arrangement is a combination of the best principles of hot-house construction. The joints are so fitted as to exclude more of the cold air than in other plans. The plants are nearer the glass. The mechanical work, except setting boiler and fitting pipe, is all completed in the sash factory, and may be readily set up or taken down by any farmer alone. The beds are five feet six inches wide, and may be cultivated by horse power, if desired, in the fall, the roof put on and used for winter crops until early spring, when the beds may be planted with tomato, egg-plant, or cauliflower plants much earlier than would be safe outside ; and after all danger of frost is past, the sash, caps and rafters may be piled out of the weather, and the crops cultivated and matured in advance of field crops.

I have one house 26x124 feet, which I enclosed about the middle of last January over several inches of frozen ground, and set with several thousands of plants as fast as the ground was thawed, and carried them through the severe weather ranging from 6° to 300 below the freezing point, with less than one-half the heating power used in other houses. From the 1st to the 9th, and from the 13th to the 15th of February, when the thermometer ranged from 1° above to 120 below freezing at sunrise, we had no fire in the heater, the warmth in the ground, with the sunlight, being sufficient to keep the plants growing well. It is more convenient to work than most plant houses, costs 25 per cent, less to build, and more than 50 per cent, less heating power than those of other plans. The ordinary hot-bed sash may be used, and farmers who grow their early plants with heating manure would find this house much more convenient and economical to work, as planting and cultivating may be done during the stormy or coldest weather. - Rudolphus Bingham, Camden, N. F