41.   A. The white powder you see is undoubtedly efflorescence, a frequent problem on brick and masonry walls.

42.   A spot of white powder on an elevator button, a desk top or a washroom floor provokes calls to police.

43.   A SUSPICIOUS white powder was found at City Hall?

44.   A white powder coating on the surface indicates that the metal has oxidized and has reached the end of its life.

45.   Across the five boroughs, a fine white powder was spilling at a rate that soon dazzled even the meteorologists.

46.   After a suspicious white powder initially tested positive for anthrax, there was a breakdown in communications among some of the state and federal agencies involved.

47.   After opening that letter, which had been sent from St. Petersburg, a white powder fell on her face, hands and sweater.

48.   But a white powder investigated by Berkeley firefighters Saturday turned out to be flour used by children playing a game.

49.   But on this day they are responding to their umpteenth panicked call to investigate an unidentified white powder that has aroused fears of anthrax.

50.   But the most popular way to take it is to cook it down into a white powder.