(New York: Appletons).
-- --, _Animal Intelligence_ (New York: Appletons).
-- --, _Darwin and After Darwin_, 3 parts (Chicago: Open Court Company.
London: Longmans).
C.Lloyd Morgan, _Comparative Psychology_ (London: W.Scott.New York: Scribners).
-- --, _Animal Life and Intelligence_ (London and New York: Arnold).
-- --, _Habit and Instinct_ (the same).
Groos, _The Play of Animals_ (New York: Appletons.

London: Chapman & Hall).
Spencer, _Principles of Psychology_, 2 vols.

(New York: Appletons).
Hudson, _The Naturalist in La Plata_ (London: Chapman & Hall).
Darwin, _Descent of Man_ (New York: Appletons).
-- ---, _Origin of Species_ (the same).
Wallace, _Darwinism_ (New York and London: Macmillans), Stanley, _The Evolutionary Psychology of Feeling_ (London: Sonnenschein, New York: Macmillans).
Baldwin, _Mental Development in the Child and the Race_ (New York and London: Macmillans).
MENTAL DEFECT AND DISEASE.
Maudsley, _Pathology of Mind_ (Macmillans).
Starr, _Familiar Forms of Nervous Disease_ (New York: Wood).
Collins, _The Faculty of Speech_ (Macmillans).
Hirsch, _Genius and Degeneration_ (Appletons).
Tuke, _Dictionary of Psychological Medicine_ (Philadelphia: Blakiston).
HYPNOTISM AND ALLIED TOPICS.
Moll, _Hypnotism_ (London: Scott.

New York: Scribners).
Binet, _Alterations of Personality_ (New York: Appletons.

London: Chapman & Hall).
Parish, _Hallucinations and Illusions_ (London: Scott.