These are organic conditions, it must be at once affirmed, which
account as nothing else can for the undeniable fact of the
hereditary transmission of tendencies to crime, as well as of
predisposition to insanity, to suicide, and to other forms of
degeneration.

The second division of criminal anthropology, which is by far the
more important, with a more direct influence upon criminal
sociology, is the psychological study of the criminal. This
recognition of its greater importance does not prevent our critics
from concentrating their attack upon the organic characterisation
of criminals, in oblivion of the psychological characterisation,
which even in Lombroso's book occupies the larger part of the
text.[4]


[4] A recent example of this infatuation amongst one-sided, and
therefore ineffectual critics is the work of Colajanni,
``Socialism and Criminal Sociology,'' Catania, 1889. In the first
volume, which is devoted to criminal anthropology, out of four
hundred pages of argumentative criticism (which does not prevent
the author from taking our most fundamental conclusions on the
anthropological classification of criminals, and on crime, as
phenomena of psychical atavism), there are only six pages, 227-
232, for the criticism of psychological types.


Criminal psychology presents us with the characteristics which may
be called specially descriptive, such as the slang, the
handwriting, the secret symbols, the literature and art of the