SCIENTIFIC DISCOVERY 195 



J. M. Montmasson, Invention and the Unconscious (New York: 



Harcourt, Brace, 1932). 

 John Tyndall, "Essay on the Scientific Use of the Imagination," 



Fragments of Science (London: Longmans, Green, 1871), 



Vol. 2. 

 E. Rignano, Psychology of Reasoning (London: Kegan Paul, 1923), 



Chap.VI. 

 C. Spearman, Creative Mind (New York: Appleton, 1931). 

 A. C. Benjamin, The Logical Structure of Science (London: Kegan 



Paul, 1936), Chap. IX. 



