The indictment charged Harris and Gray each with one count of embezzling tile belonging to HUD worth more than $100, in violation of 18 U.S.C. Sec. 657, which so far as relevant here provides that Whoever, being an officer, agent or employee of or connected in any capacity with [HUD] ... embezzles, abstracts, purloins or willfully misapplies any moneys, funds, credits, securities or other things