Tlie Ncvcn Itlver Traffocljr.We arc allowed to copy from a private Idler the following. It is froman eve witness and a reliable source:•“It was on the lfitli, I think, that old’man Beckwith, at his ranch, .Seven Rivers, shot and killed his son-in-law, Win. II. Johnson. His weapon was a double-barrelled shotgun, loaded heavily with slugs and pistol balls. The charge took effect in the shoulder, nock ami breast, dislocating the neck, and’killing the victim instantly. Beckwith then til tempted to kill his sou, John Beckwith, and was restrained with the greatest difficulty. During the struggle Wallace Olinger shot Beckwith through the check and nose with a revolver. Beckwith was arrested ami started, under guard, to Fort Stanton. Family a Hairs the cause of the difficulty. It is reported tlmt sheriff Peppln has resigned.” x