Show cheap light science and Invent invention lon describes a recent achievement of a french who luis ling successfully tried out in his own house a scheme for or op operating brating electric lights without cost upon his bis water supply pipe he has fitted a high speed unter turbine which drives a dynamo obar ging a storage battery every time a ta turned on in the house wr t ream of water Is put to work tit at loading the battery which furnishes current for the lights it Is simply utilizing energy that Is ordinarily wasted says the inventor |