Later, Mr. Hubert was sent to Buchenwald. ''In the camp there was a cage with a bear and an eagle,'' he said. ''Every day, they would throw a Jew in there. The bear would tear him apart and the eagle would pick at his bones.'' ''But that's unbelievable,'' whispered a visitor. ''It is unbelievable,'' said Mr. Hubert, ''but it happened.''