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Show Stone Age Heater Good to Warm Poultry House Michigan State college men have gone all the way back to the Stons age to find an economical way tf heat poultry houses and sman' greenhouses. The work has been done where winter temperatures make heat in laying houses profitable, profit-able, observes the Country Home. Their heater is made of an empty oil drum and a pile of stones. A fire door is cut in one end of tfJS drum and a hole for the smoke pipe in the other, and the oil drum is plactjtf"ouTT3-side on a bed of sand oIiiasoniy. A blanket of stones from 12 to 18 inches thick Is then placed around the sides and over the top of the drum. The stove '3 fired with wood; when the ston3 about the oil drum become thoroughly thor-oughly heated, they will radiate warmth for hours. In temperatures as low as 30 degrees below zero, it has not been necessary to fire the stove later than nine o'clock at night to furnish ample heat In tile poultry house until the next morning. morn-ing. One winter's experience In heating a 10-by-19-foot greenhouse was also entirely successful. |