political life.

INTELLECTUAL DIFFERENCES

Reference to _Hereditary Genius_.

MENTAL IMAGERY

Purport of inquiry; circular of questions (see Appendix
for this); the first answers were from scientific men,
and were negative; those from persons in general society
were quite the reverse; sources of my materials; they are
mutually corroborative. Analysis of returns from 100
persons mostly of some eminence; extracts from replies of
those in whom the visualising faculty is highest; those in
whom it is mediocre; lowest; conformity between these
and other sets of haphazard returns; octile, median, etc.,
values; visualisation of colour; some liability to exaggeration;
blindfold chess-players; remarkable instances of visualisation;
the faculty is not necessarily connected with keen sight or
tendency to dream; comprehensive imagery; the faculty in different
sexes and ages; is strongly hereditary; seems notable among
the French; Bushmen; Eskimo; prehistoric men; admits of being
educated; imagery usually fails in flexibility; special and generic
images (see also Appendix); use of the faculty.

NUMBER-FORMS

General account of the peculiarity; mutually corroborative
statements; personal evidence given at the Anthropological