41.   Both apologized but denied plagiarizing, touching off a sharp debate among scholars and critics over what plagiarism is and how much public pillorying the two deserve.

42.   Both apologized but denied plagiarizing, touching off a sharp debate among scholars and critics over what plagiarism is and how much public pilloring the pair deserve.

43.   Both shootings touched off criticism.

44.   A convicted drug dealer dies in a confrontation with the police, touching off a night of disturbances and months of racial discord.

45.   A crash in the currency Thursday touched off a wave of panic buying that continued Saturday.

46.   A Grimson one-liner touched off laughter on Kings bench with just over a minute to play that might have been interpreted as a slight at the Stars.

47.   A higher bid from Norfolk Southern could touch off another round of bidding for Conrail.

48.   A cold front approaching the Northern Rockies will also touch off widely separated thundershowers, especially in the mountains.

49.   A Missouri move to the Big Ten would touch off major movement.

50.   A drug abuse case has touched off a similar debate in South Carolina.