Science: Advancement in Philadelphia

To Rosella Carroll, 14, test tubes and microscopes were the most fascinating things in the world. Studying science at Bethlehem Academy in Faribault, Minn., her grave, shining brown eyes seldom missed a trick. Rosella was pious, too, and she intended to enter the Catholic sisterhood. But she knew that in this day and age a nun could be a scientist, if she were smart as well as conscientious.

So at Rosary College in Illinois, she went on with her science studies. In 1930 she took her final vows as a member of the Dominican Sisters,...

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