Science: Alexander Bell's Sheep

The most remarkable sheep since the time of Jason the Argonaut nibbled, stared, bleated last week in a new home at Middlebury, Vt., where they are now beginning the third chapter of their careers, in the care of the U.S. Bureau of Animal Industry. Though they do not have golden fleece, they may be almost as valuable to U.S. farmers, wool-wearers and mutton-eaters. Their unique characteristics:

1) They bring forth twins in four out of five births, which is two to eight times as often as twinning among ordinary flocks of sheep.

2) They produce enough milk through enough functional nipples—four...