Phrenology exemplified and illustrated or Scraps no. 7 by D.C. Johnston, Boston, 1837
Phrenology has many definitions in the Oxford English Dictionary. My favorite is:
The theory that the mental powers or characteristics of an individual consist of separate faculties, each of which has its location in an organ found in a definite region of the surface of the brain, the size or development of which is commensurate with the development of the particular faculty; the study of the external conformation of the cranium as an index to the position and degree of development of the various faculties. (Phrenology, Oxford English Dictionary c 2016)