Show said to have demanded for letters wh ch he threatened to turn over to federal au ties chicago william S mcswain and william cole bis brother in law were arrested here friday charged with attempting to blackmail J ogden ar mour and other members of armour co for 40 in connection with the beet trust investigation with letters which they are alleged to have stolen from the files of the company mcswain was employed by armour co tor tour years as a stenographer in that way had access to part 0 the mall ot the pac kinghouse since the recent beef investigation was begun it is charged he has taken letters crom the files ot the concern three weeks ago it Is alleged he approached mr armour and threatened to turn the letters over to the federal au ties unless he was paid W mr armour refused to listen to tha proposition and then mcswain it la alleged made similar demands on other officials of the armour company cole it Is claimed stood in with me swain in the scheme |