extending to A simple and effective alarm, to give notice within of the plants under treatment, the scale or vermin can the aperture, the tail being pivoted when the door knob is turned from the outside of the be semoved without injuring the trees or plants. in this slot, and having at its outer… … obtained from gas producers. A continuous firing is thus maintained, and the heat regenerative principle involved has resulted in the most efficient and eco- Mr. Daniel H. Streeper, of Norristown, Pa. The door nomical system of burning fire brick yet known. As is fitted with a lock of ordinary…
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