JUST HOW IS IT DONE?Do Police Furnish Barrels for Swimming Pool Theft Victims?For the second time in a week police today failed to report how a boy swimming at a city pool got home after his clothes were stolen from a free locker.Donald Lyons, 917 North Keystone avenue, found himself with nothing but his birthday suit whenthieves stole his pants, shirt, tennisshoes and a signet ring bearing the initials B. B L., all valued at $8. from a locker at Willard park pool Thursday.