Science: Every 6.6456 Days

Ever since he was a boy on a New Hampshire farm, Charles Greeley Abbot has pooh-poohed the almanacs' weather forecasters. "We used to get a farmers' almanac," he says, "and it would say something like: 'About this time, look for a frost.' It didn't pin down the area, or the day, and people took it in three or four states. How in the world could it miss?"

Last week Dr. Abbot laid himself wide open to pooh-poohs by all professional weather forecasters. Like the almanac makers, he had made some broad weather forecasts, and he had projected them a full year ahead.

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