Our very proper anxiety to avoid every possible chance of committing and punishing the innocent doubtless enables many guilty persons to escape every year; and probably quite half the prisoners acquitted at every assize are really guilty in some degree. The jurisprudence of a hundred years hence will certainly have been so much improved that innocent persons will rarely be accused at all, and that guilty ones will not be able to escape on technical grounds: and with improved detective methods the chances of escape in any given case will be greatly diminished. What punishments are inflicted will be of a reformatory character, and no doubt provisional release, freed from the many crying scandals of the ticket-of-leave system, will play a great part in scientific penology. Recidivism will, of course, be the subject of much sharper punishment. In the meantime, the study of mental science in its relation to crime will have made great strides, and if the views of our own age in regard to heredity should be maintained, a very great source of crime will probably be got rid of altogether, because men and women with just that mental twist which leads to crime will, by one device or another, be absolutely prevented from propagating their race. [31] It is impossible to work out here the various methods of individual reform applicable to convicts of various sorts, because the nature of these methods must necessarily depend, to a great extent, upon the conditions of a society of which only the most salient and extreme peculiarities can be foreseen even by the most imaginative. But all evidence seems to suggest that actual crime will have become much diminished in amount, while the necessity for dealing with what may be called technical crimes--misdemeanours, and offences against regulations made for the convenience of society rather than for the defence of life and morals--will probably have been reduced to a minimum, partly by the intelligence of the population, and partly through the fact that the minor offences will have ceased to be dealt with by law, and will be sufficiently repressed by natural causes. Not only, therefore, will the amount of necessary restraint become less, through the diminution of crime and of temptation to crime, but the employment of legal restraint will be less demanded, the latter being recognised as, when avoidable, dangerous to public morals. And, while criminal law will be less active, civil litigation will also probably be much less heavy. The same causes which will tend to make us more careful to avoid committing offences against the common right of others, will make us more scrupulous to perform contracts. And as a consequence of the improved morality which there seems every reason to anticipate, a hundred years hence, it will no doubt have become possible to execute a reform which many thinkers have desiderated as an element of perfected polity. It is hardly necessary