The following pages are a translation of that portion of Professor Ferri's volume on Criminal Sociology which is immediately concerned with the practical problems of criminality. The Report of the Government committee appointed to inquire into the treatment of habitual drunkards, the Report of the committee of inquiry into the best means of identifying habitual criminals, the revision of the English criminal returns, the Reports of committees appointed to inquire into the administration of prisons and the best methods of dealing with habitual offenders, vagrants, beggars,