Science: Rabbit Food for Owl Eyes

The R.A.F. may soon be eating Arizona carrots in preference to all other carrots on earth. The British Ministry of Foods last week impatiently cabled to University of Arizona Nutrition Chemist Margaret Cammack Smith for more details on her discovery that "Arizona carrots contain three to ten times as much carotene as the average carrot*—a discovery, said the Ministry, "of extreme interest and value."

Reason: carotene, a yellow pigment occurring in association with chlorophyll in green plants, is transformed by the body (probably the liver) into vitamin A, which insures sharp human...

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