EP ü". B. Wii,son, of the firm of Stkbbiss & Wilsox, of this city, was assanlf ed and robbed on liis way home from hia etore, at about lOji o'clock on Monday evening last. He was met at tlie corner of Fiftli and Liberty Street by tu-o uien.one of whotn, applying a revolver to bis breast, or in tliat vicinity, demanded bis pocket book. Brady, supposing that tbe tliing was a joke, replied, " we'll see about that," and drawing las store kf.v, said that two could play slnot. At tbis, the 0110 who beid the revolver, said to the otb. er, '-Jim, come and tako bis pocket-book,11 jut " Jiiü 's " courage was not quite up, aid he objected, -saying " he's got a knife."- " Yes, Jim,'' says Brapy, I've got a knife, andam dangerous," still supposing the aff.ir g. joke By this time, the leader of the two became cnrised. commenced wearing, proclaiiued.no more fooling.and appliedthe revo1irer.to Bbadys head, when Bobadt, iliscoverinj tbe point of the joke, concluded to give up an empty pocket-book and save hia biains and banded over. Tbe bighwaynicn gut potlHBg for their pains, but it was no less a daling outrage for all tbat. It stands mr city In band to esUblish avisilant polic?.