My father demonstrates by means of data, contributed for the most part by Bodio and Cognetti, that the importance attributed to poverty as a factor of criminality, especially by certain socialistic schools, has been largely exaggerated; while, at the same time, the fact that both wealth and education have their specific crimes, has been ignored by these schools.

In dealing with collective criminality, my father merely repeats the original theories on the subject, expressed by him in 1872 and constantly confirmed since then. These theories have been utilised and illustrated by a number of writers: Ferri, Sighele, Ferrero, Le Bon, and Tarde.

In the prophylaxis and cure of crime, not content with mere criticism of present methods, the new doctrines suggest practical and efficacious means of repressing crime.

In view of the fact that criminality is assuming a changed aspect, adapted to the conditions of modern life and civilisation, it should be combated by the very means furnished by progress,—the telegraph, press, all measures for fighting alcoholism, popular places of recreation, etc.

For the prevention of crime, besides those measures designed to minimise the influence of physical and economic factors,—baths, sanitary regulations, clearing of forests, prevention of over-crowding, social legislation, limitation of wealth, graduated system of taxation, collective services, expropriation, etc.,—my father suggests special measures for diminishing certain kinds of crime,—divorce for sexual offences, affiliation orders for infanticide and government of a truly liberal character, with freedom of the press and public opinion to combat political crime. He also emphasises the importance of provident and charitable institutions, specially for orphan and destitute children, to aid in suffocating germs of criminality, in view of the fact that it is to ragged schools and similar institutions that the decrease of crime in England is certainly due.

Finally, with regard to the direct repression of crime, the new methods of identification devised by Bertillon and Anfosso, and all modern aids for the detection and apprehension of criminals, such as rapid communication and publicity, should be utilised in all countries where the police aspire to be considered scientific in their methods.

A minute and intelligent individualisation of penalties is suggested as being far more efficacious than the uniform and injurious punishment of detention in prison; so that while society defends itself, it tends to improve the perverted faculties of criminals, or where improvement is impossible, to utilise them in their natural state, following the example set by nature in the transformation of injurious parasitical relationships into pacific and mutually beneficial symbioses.

III

The Female Offender (La Donna Delinquente); The Prostitute and the Normal Woman

(In Collaboration with Guglielmo Ferrero)