Wasting Electricity

Carelesfwss on the part of the ïaotormau is, according to recent tions, the cause of a greqt waste of electrical forcp. ïhis occuriat the starting and stopping. Sometimos the power is left on nntil after the brakes are set, at j other times there are nierely partial currents, bnt qnite enough to foot up a considerable aggregate. Lu fact, it is estimated that as much as 20 per cent of power may be lost in this way. So noticeable has this becoine that it has been found advisable to adopt a very simple device by means of which the lost cnrrent is, at least approxiinately, measnred, and the amount thereof can be charged up against the nnskillful or careless motorman. This device consista of a strip of alloy placed in a box prepared to receive it. The alloy is held against the wire by a weight attached to the lower nd of the strip. It is supported by a bort piece of Germán silver wire of uch cross sectiou as to be heated by the urrent which flows through it to operte the car. At a certain temperature 3e wire uielts its way through the strip f alloy, tbus allowiug the strip and weight to descend. There is an automatic device to prevent injury to the ecorder or the stoppage of the car in ase the wire should inelt under an abormal cnirent. The recorder is pushed nto place, at the same moment closing be car circuit. To insure its use the arangement is snch that unless the reorder is in place the circuit is open, and the car will not start. A record is cept of the nurnber of miles each man nins and the uumber of inches of alloy melted during the run. This is returned t the end of a month and is posted up ver against the man's name. It has )een estimated that a considerable