four o'clock
Well , he went to lunch about twelve o'clock , and he ai n't come back yet . Is there anything what we can do for you , Leon ? '' But Sammet had hung up the receiver without waiting for further conversation . At four o'clock the telephone rang again , and once more Abe answered it . `` Hello , '' he said . `` Yes , this is Potash & Perlmutter . Oh !