The writer has, therefore, taken the directories[1] of the four

American cities, which were the subjects of study in the
original article, and has estimated the number of persons of a
certain name living in each city by first counting the number
of names printed in a whole column of the directory and then
multiplying this figure by the number of columns occupied by
that name
The writer has, therefore, taken the directories[1] of the four
American cities, which were the subjects of study in the
original article, and has estimated the number of persons of a
certain name living in each city by first counting the number
of names printed in a whole column of the directory and then
multiplying this figure by the number of columns occupied by
that name. The number of persons bearing the same name in
'Who"s Who in America' (1912-1913) is then taken for each city.
The percentage is finally calculated of the number of the
'Who"s Who in America' names in the number of those bearing
that name in the directories.