Artificial Arm

-Mi. Phclps, ofN. Yorkcity, known as un ingenious constructor oí triisses, abdominal supporters, ontl óíhtjr usoful apparatus, completed on arliiicial nrm Inst woek lor a Indy in Mnine, ivhich is an admirable substilute for le lost mernb-r. 1 Je took a cast, in piaster, of ihe lost limb on the lefl s'idè and tlien matched it in wood. The cl biïw works deliglitfülly; the wrist lins both flexión and roiotion, and nïl the fingers, nrid oven the thi:mb. uhich lias the trué bnlt and Socket joint nre bkiüftilly mode, that v.lien glpyjêJ, iu enllcman vho wns pcnnitted to oke her anri imdor lus own, would mstrust that it was a wondru one. Nearly dalf the arm, Trom tlie ehuultler down, wns preeerved tor a slump, vvh ich slips in u sockef, ond the ■vliule is mude fat-t and kept m place hy atttirhnients lo a thüracic belt, analagous t common stnys. By the any diseciion the h-.dy choses can be given to tlie e.xlremity: but the flexión and extensión is adroitly b.-ought nboul by the oLlier hand. M. Arnro,-thc eminent Fjench pliiloaopher, latcly staled it the Acadcmy of Pari?, that il a flish of liuhUiing be scen by a person b d:inger is! over, the clcctric tíuid traveling more rapiil than the light occaaioned by. the discharg.e.-