Another tough day for Boston Archbishop Bernard Cardinal Law as the news of the arrest in San Diego of Fr. Paul Shanley, for years a priest under his jurisdiction and one who liked boys—little boys, was all over the pages of the Boston Globe and the Herald this morning. This all after the four principal TV news stations in the Boston metropolitan area each led off their newscasts last evening with a withering, 10-plus-minute coverage of the tragic story and resumed their telecasts this morning with more of same. The cardinal who has steadfastly ignored the calls of most of the Catholic faithful for his resignation, perhaps will accept the message Sunday when he launches his annual archdiocesan appeal at all masses for $16 million in contributions. Many Catholics are expected to say no, until he says yes.