o prison, and of 229 women of marriageable age 128 were prostitutes.
The economic damage inflicted upon the State of New York by the Jukes in
seventy-five years was estimated at more than $1,300,000, to say nothing
of diseases and other evil influences which they helped to spread.

A more recent investigation shows that 2,820 people have been studied;
2,094 were of Juke blood and 726 of "X" blood married into the Juke
family; of these, 366 were paupers, while 171 were criminals, and 10
lives have been sacrificed by murder. In school-work 62 did well, 288
did fairly, while 458 were retarded two or more years. It is known that
166 never attended school; the school data for the rest of the family
were unobtainable. There were 282 intemperate and 277 harlots. The total
cost to the State has been estimated at $2,093,685.

_The Kallikak Family._

The history of the Kallikak family has been traced and fully described
in detail by Dr. Goddard, and his study shows the hereditary nature and
sociological bearings of feeble-mindedness.

Martin Kallikak was a youthful soldier in the Revolutionary War. At a
tavern frequented by the militia he met a feeble-minded girl by whom he
became the father of a feeble-minded son. In 1912 there were 480 known
direct descendants of this temporary union. It is known that 36 of these
were illegitimates; that 33 were sexually immoral; that 24 were
confirmed alcoholics; and that 8 kept houses of ill-fame. The
explanation of so much immorality will be obvious when it is stated that
of the 480 descendants 143 were known to be feeble-minded, and that many
of the others were of questionable mentality.

A few years after returning from the war this same Martin Kallikak
married a respectable girl of good family. From this union 496
individuals have been traced in direct descent, and in this branch of
the family there were no illegitimate children, no immoral women, and
only one man who was sexually loose. There were no criminals, no keepers
of houses of ill-fame, and only two confirmed alcoholics. Again the
explanation is clear when it is stated that this branch of the family
did not contain a single feeble-minded individual. It was made up of
doctors, lawyers, judges, educators, traders, and landholders.

_New Zealand Cases._

But it is not necessary to go to the records of older countries to find
examples of this kind. Unfortunately, this young Dominion, whose history
as a European settlement