Science: Every Calf a Blueblood

The day may not be far off when most U.S. cows, however familiar they may be with the habits of bees and flowers, will never see a bull. So predicted Dr. J. W. Bartlett of New Jersey's College of Agriculture, announcing that, by artificial insemination with sperm of outstanding bulls, his group has produced calves which grow up to be cows giving twice as much milk as ordinary animals.

Artificial animal insemination is at least 600 years old—the Arabians used it in horse-breeding in the 14th Century and the Russians have used it on a big scale in cattle-raising since the late...

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