Joe Bates Smith Is Author of Radio Play■■ i, ■ it1 1 1 1 ■Joe Bates Smith, son of Mre. Pear! Smith, 428 Jaekson-st, has written a radio play for Jean Hersholt In which the latter will play the leading ro*e of Dr. Christian.The play will be broadcast over station WABC Tuesday evening at 10 o’clock. The p ay is listed unln* two titles in the radlo^ progra*ns “Dr. Christian,** and “The Com*?* stone,'* Becently Smith met Hot* sholt in New York City* ,The young Sandusky dramacist hars written a unrobe* of plays tor. “Death Valley Days,** radio pro-