This article focuses on a study that has recently been made of scientists starred in the biographical directory "American Men of Science." It is based largely upon returns from a comprehensive questionnaire. The 2,607 scientists who have been starred are those who, by secret ballot of their fellow scientists, were voted to be the leading research workers in one of 12 sciences. The study revealed that about 46 per cent of the starred scientists who reported had fathers who were professional men, 22 per cent of the fathers were business men and a like number were farmers, about 8 per cent were skilled workers and less than 1 percent were apparently unskilled laborers. As far as early residence of the starred scientists is concerned, 22 percent, it was on a farm, for 15.5 percent, in a rural village, for 31 percent, in a small city, for 25 percent, in a large city and for 6.5 percent, in a suburb of or near a large city. Thus considerably more than half lived in cities. In proportion to the share the city population made of the national total at the time when most of these scientists were young, cities yielded about six times as many as did farms.