71.   Furthermore, public-key cryptography can be used for sender authentication, known as digital signatures.

72.   Gerald had been using her for his own ends.

73.   Government officials said the proceeds would be used for general financing purposes.

74.   Gun Metal A copper based alloy including tin which was originally used for casting cannons.

75.   Hanmer was wearing a white golf shirt and khaki pants he apparently used for gardening.

76.   He invented the Cornish engine, a beam engine of Brobdingnagian proportions used mainly for pumping water out of tin mines.

77.   He placed the blame on the type of lens usually employed by portraitists, recommending instead those used for landscape.

78.   He still retains ownership of the name and uses it for his production company.

79.   He uses them for coyote bait.

80.   He was surprised at the vast basement area that was used for medical research beneath the Alexander Fleming House building.