rriages are not
desirable. Since it would be well to make an effort to increase the
opportunities for further play of sexual selection, the lack of which is
sometimes responsible for cousin marriages, consanguineous marriage is
by no means to be indiscriminately indorsed. Still, if there are cases
where it is eugenically injurious, there are also cases where its
results are eugenically highly beneficial, as in families with no
serious defects and with outstanding ability.

The laws prohibiting marriage between persons having no blood
relationship but connected by marriage should all be repealed. The
best-known English instance, which was eugenically very
objectionable,--the prohibition of marriage between a man and his
deceased wife's sister,--has fortunately been extirpated, but laws still
exist, in some communities, prohibiting marriage between a man and his
stepchild or stepparent, between a woman and her deceased husband's
brother, and between the second husband or wife of a deceased aunt or
uncle and the wife or husband of a deceased nephew or niece, etc.

The only other problem of restrictive eugenics which it seems necessary
to consider is that offered by miscegenation. This will be considered in
Chapters XIV and XV.

To sum up: we believe that there are urgent reasons for and no
objections to preventing the reproduction of a number of persons in the
United States, many of whom have already been recognized by society as
being so anti-social or inferior as to need institutional care. Such
restriction can best be enforced by effective segregation of the sexes,
although there are cases where individuals might well be released and
allowed full freedom, either "on parole," so to speak, or after having
undergone a surgical operation which would prevent their reproduction.

Laws providing for sterilization, such as a dozen states now possess,
are not framed with a knowledge of the needs of the case; but a properly
drafted sterilization law to provide for cases not better treated by
segregation is desirable. Segregation should be considered the main
method.

It is practicable to place only minor restrictions on marriage, with a
eugenic goal in view. A good banns law, however, could meet no
objections and would yield valuable results. Limited age restrictions
are proper.

Marriages of individuals whose families are marked by minor taints can
not justify social interference; but an enlightened conscience and a
euge