81.   Now a remarkable new book by a British journalist offers tantalizing clues to revive and expand the polio vaccine theory.

82.   On other questions he would face as treasury secretary, his corporate background offers few clues.

83.   One recipe, for White Mountain Cake, filled and frosted with meringue, may offer a clue to the popularity of layer cakes for birthdays.

84.   On Thursday, Greenspan offered no clues to when interest rates might rise.

85.   On Wednesday, she offered no clues on whether she thought she could win a seat on any of the three.

86.   Outside the athletic department, few people read the book, which offered obvious clues about how uninterested Herren seemed to be in the academic process.

87.   Packages rarely offer clues, though a close reading of the manual or readme file may help.

88.   Only their eyes, ice-blue and penetrating, offer a clue.

89.   Reasons for voter apathy are hard to pinpoint, but a report by the Kettering Foundation, Governing in America , offers some clues.

90.   Reasons for voter apathy are hard to pinpoint, but a report by the Kettering Foundation, Governing in America, offers some clues.