Although this simplifies the work of the genealogist immensely, it
deprives it of value to a corresponding degree.

(c) As the purpose of genealogy in this country has been largely social,
it is to be feared that in too many cases discreditable data have been
tacitly omitted from the records. The anti-social individual, the
feeble-minded, the insane, the alcoholic, the "generally no-count," has
been glossed over. Such a lack of candor is not in accord with the
scientific spirit, and makes one uncertain, in the use of genealogies,
to what extent one is really getting all the facts. There are few
families of any size which have not one such member or more, not many
generations removed. To attempt to conceal the fact is not only
unethical but from the eugenist's point of view, at any rate, it is a
falsification of records that must be regarded with great disapproval.
At present it is hard to say to what extent undesirable traits occur in
the most distinguished families; and it is of great importance that this
should be learned.

Maurice Fishberg contends[160] that many Jewish families are
characterized by extremes,--that in each generation they have produced
more ability and also more disability than would ordinarily be expected.
This seems to be true of some of the more prominent old American
families as well. On the other hand, large families can be found, such
as the remarkable family of New England office-holders described by
Merton T. Goodrich,[161] in which there is a steady production of civic
worth in every generation with almost no mental defectives or gross
physical defectives. In such a family there is a high sustained level.
It is such strains which eugenists wish especially to increase.

In this connection it is again worth noting that a really great man is
rarely found in an ancestry devoid of ability. This was pointed out in
the first chapter, but is certain to strike the genealogist's attention
forcibly. Abraham Lincoln is often quoted as an exception; but more
recent studies of his ancestry have shown that he is not really an
exception; that, as Ida M. Tarbell[162] says, "So far from his later
career being unaccounted for in his origin and early history, it is as
fully accounted for as is the case of any man." The Lincoln family was
one of the best in America, and while Abraham's own father was an
eccentric person, he was yet a man of considerable force of character,
by no means the "poor white trash" w