Self-winding Clocks

A clockmaker of Oopenbagcn, named Louis Soüiiderberg, who ibr sonie tiiue patt has had oharge of that city's electric timokeepers, has just nyentodau ingenieus :ippliance whieh obviates the uecesstty cf winding up the regulator, froin which tho docks id question take their tiuie." By a%ieohanicalcoDtrivapce which periodically outs off the Htrcam of electric fluid cmanuting frum the battery, and brinca an electromagnet to bear upou the relaxed ínaiii spring in such a way ss to renew its tensión instantaoeously, perpetuSl motion is praotically itnparted to the works of the regulator- that is to say, as long as the batterics conneoted with itare kept properly Ripplied witli acids. The discoverer of this import ant itnproveniCDt bas satisfied himself, by six months' suecessful experiments in hi-t own workshops,that his system works faultlessly, and bas applied for pcrmissioD to adapt it to the eleotric clooks ,-ct up by the niunicipality in different parts of the I'anish capital. Elcctricity, under Mr. Soenderberg's compulsión, u destined not only to make the Copenhagen elocks go, but to wind theui up, with never-ei.dintr