Science: 6,000 Miles

Artificial impregnation of animals is no novelty. In England, Australia, Russia, the U. S., cows have dropped calves after fertilization by the hand of man. Artificial insemination of mares is a routine demonstration at veterinarians' conventions (TIME, Aug. 24). Safely under way this week, however, was an experiment in man-managed fertilization of cattle which was unique for the 6,000-mile distance between sires and dams.

Argentine cattlemen would like to improve the milk production of their cows by breeding them with high-grade imported bulls. But bulls bought from the U. S. usually succumb to...

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