Show Guarding Against D New York Dec nn an outcome of several explosions of In hr buildings being constructed In various sections section of the city every large structure turn ture being erected Is III no now under guard of police and private detectives No great damage has been done by time the ex cx explosIons already heally reported because the powder used lIBed exerts Its force only when In II a space all as drill holes rewards have been offered by the theIron theIron Iron league for tor the apprehension of at the tho persons persona involved Jut but so far lal no clew chow has been found as to their identity |