conditions of time and place. Attention must be drawn to these
conditions at the outset, for it is only by accurately defining
them that the scientific conscience of the student of sociology is
developed and confirmed.

The experimental philosophy of the latter half of our century,
combined with human biology and psychology, and with the natural
study of human society, had already produced an intellectual
atmosphere decidedly favourable to a practical inquiry into the
criminal manifestations of individual and social life.

To these general conditions must be added the plain and everyday
contrast between the metaphysical perfection of criminal law and
the progressive increase of crime, as well as the contrast between
legal theories of crime and the study of the mental
characteristics of a large number of criminals.

From this point onwards, nothing could be more natural than the
rise of a new school, whose object was to make an experimental
study of social pathology in respect of its criminal symptoms, in
order to bring theories of crime and punishment into harmony with
everyday facts. This is the positive school of criminal law,
whereof the fundamental purpose is to study the natural genesis of
criminality in the criminal, and in the physical and social
conditions of his life, so as to apply the most effectual remedies
to the various causes of crime.

Thus we are not concerned merely with the construction of a theory
of anthropology or psychology, or a system of criminal statistics,
nor merely with the setting of abstract legal theories against