Physiology: Those Orcadian Rhythms

The two travelers looked like typical American tourists as they ambled along Rome's Via Veneto. Then an alarm watch jangled on one man's wrist.

"What on earth do I do now?" he asked.

His companion, an Air Force psycholo gist named Sheldon Freud ("a very dis tant cousin of Sigmund — fifth or sixth"), answered promptly: "Sit down and we'll order coffee." While they sipped their coffee at Doney's, the first man checked the dial on a small instrument hooked to his belt. He was noting his temperature. There was a wire leading from the gauge down his trousers to a...

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