e quadruplets is due to the hereditary influence of the father
rather than the mother. If this is the case, then the four girls must
all have come from one egg-cell, which split up at an early stage. Note
the uniform shape of the mouth, and the ears, set unusually low on the
head.]

"The following is a typical schoolboy anecdote:

"'Two twins were fond of playing tricks, and complaints were frequently
made; but the boys would never own which was the guilty one, and the
complainants were never certain which of the two it was. One head master
used to say he would never flog the innocent for the guilty, and the
other used to flog them both.'

"No less than nine anecdotes have reached me of a twin seeing his or her
reflection in the looking-glass, and addressing it in the belief that it
was the other twin in person.

"Children are usually quick in distinguishing between their parent and
his or her twin; but I have two cases to the contrary. Thus, the
daughter of a twin says:

"'Such was the marvelous similarity of their features, voice, manner,
etc., that I remember, as a child, being very much puzzled, and I think,
had my aunt lived much with us, I should have ended by thinking I had
two mothers!'

"In the other case, a father who was a twin, remarks of himself and his
brother:

"'We were extremely alike, and are so at this moment, so much so that
our children up to five and six years old did not know us apart.'

"Among my thirty-five detailed cases of close similarity, there are no
less than seven in which both twins suffered from some special ailment
or had some exceptional peculiarity. Both twins are apt to sicken at the
same time in no less than nine out of the thirty-five cases. Either
their illnesses, to which I refer, were non-contagious, or, if
contagious, the twins caught them simultaneously; they did not catch
them the one from the other."

Similarity in association of ideas, in tastes and habits was equally
close. In short, their resemblances were not superficial, but extremely
intimate, both in mind and body, while they were young; they were reared
almost exactly alike up to their early manhood and womanhood.

Then they separated into different walks of life. Did this change of the
environment alter their inborn character? For the detailed evidence,
one should consult Galton's own account; we give only his conclusions:

In many cases the resemblance of body and mind continued unaltered up to
old a