Science: Fingertips

"I had an appointment with my dentist," said Lillian Greneker in Manhattan last week, ''and I was impatient to leave the beauty parlor. I watched the manicurist drop the orange stick to pick up the emery board, and so on, grudging the seconds wasted, when suddenly it occurred to me that the different tools might be at tached to various fingers. At the dentist's I borrowed some wax to mold a thimble and began to experiment with my idea." An artist and architect who uses her hands a great deal, Mrs. Greneker experimented with...

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