71.   At the core of each nuclear weapon is a small, hollow ball of plutonium, a highly radioactive element.

72.   Balls of blue paint sail and splatter.

73.   At times, the process has resembled the traditional prenuptial ball of knots, like the one Fannie presented to her prospective daughter-in-law.

74.   Balls of dung serve as fuel to heat the rudimentary operating room.

75.   Auriemma reminds them to play on the balls of their feet.

76.   Ayarza rolled slowly on the balls of his feet and grinned.

77.   Balancing on the balls of his feet in a gymnastic stance, nervously gesticulating toward his ears when something displeases him, he is unmistakably in command.

78.   Barry Bonds went down whe n he fouled a ball of his right foot in the third, but remained in the g ame.

79.   Barry continues to lead the team in scoring, while Lamond Murray is playing the best ball of his career.

80.   Basically, it is a flaming, sometimes exploding, ball of sulfur, pitch and naphtha that water will not extinguish.