Show copper put them out boston the recent rahe in copper stocks on the th doston boston stock block exchange was an important contributing causo cause to the suspension on friday ot of the stock brokerage firm of ID II 11 R leighton co which assigned for the benefit of its creditors although the brin la Is not a member of any stock ex change the assignment wai adjudged of considerable importance froia from the fact that the firm lias has some forty branch offices all but throe three of them la in new england clelea and towns |