Popular science monthly . Just as he was going outthe door, however, a terrified yellproclaimed that the big rattler hadgotten loose in the darkened was really no rattler in theroom, but the boy went out thoroughly-frightened at last. idea An Alarm-Clock Dinner Bell forOld Dobbin FROIVI the standpoint of the manabout the house, the dollar alarm-clock has filled more long-felt wants thanany other modern invention. In thesecolumns alone articles liave alreadybeen published telling iiow to open thefurnace-door with an alarm-clock, howto control electrical toys with alarm-clocks, and a
Popular science monthly . Just as he was going outthe door, however, a terrified yellproclaimed that the big rattler hadgotten loose in the darkened was really no rattler in theroom, but the boy went out thoroughly-frightened at last. idea An Alarm-Clock Dinner Bell forOld Dobbin FROIVI the standpoint of the manabout the house, the dollar alarm-clock has filled more long-felt wants thanany other modern invention. In thesecolumns alone articles liave alreadybeen published telling iiow to open thefurnace-door with an alarm-clock, howto control electrical toys with alarm-clocks, and a generous number of inter-esting and ingenious plans for awakeningthe entire family by alarm-clock sys-tems. The latest alarm-clockwill interest the manwho either forgets oris too busy attendingto other things, to feedhis horse. An alarm-clock issecurely fastened to thetop of a grain-bin andset to release adoor at acertain pre-scribed is asmall catchwhich allowsthe door todrop. This isoperated by acord running. Tripping the trap-doorwith an alarm-clock up to the clock and around the alarm-winding key. The alarm is set for thefeeding time, and when the key revolves,the string is pulled, the door drops andthe grain pours into the trough. An Experiment with the StaticElectricity from Belts THE following is a little experimentwith static electricity. Take anordinary electric light bulb, grasp itnear the tip, taking care not to get thefingers near the screw-socket on theother end, and hold the bulb near aslipping belt that is generating staticelectricity, so that the brass almosttouches the belt. Sparks will be seento pass to the bulb, which is then acting asa Leyden jar, and will hold a considerablecharge, depending on the size of thebulb. The amount of the charge can verywell be apprehended by touching thebrass end to a water pipe. 780 Poptilar Science MordltJy Brackets for Double Sheetsof Wrapping Paper MANY storekeepers still use doubleflat sheets of wrapping paper, in
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
