A Revolving Rifled Cannon

ronUe:n:in oí Uurtlonl, Uoni)., has myented :i revojv'mg riHed cannon vvhiu:i has three Beperatu bartels, muge oí' fetèel and riflfcd, tliirty inches ín lengtli and ono inch boru, finnly fised n a írrangdlar ron óf rteel iranio. These aro uountod on a light pair ol wheels about i'our fëeï in diameter. The whole dóes not weigh more than two Inindred.