Psychology of the Child.
Preyer, The Mind of the Child, 2 vols. (New York: Appletons).
Compayré, Intellectual and Moral Development of the Child, 2 vols. (New York: Appletons).
Sully, Studies of Childhood (New York: Appletons. London: Longmans).
Baldwin, Mental Development in the Child and the Race (New York and London: Macmillans).