arching the one eyebrow on that side; although, of course,
there was nothing to be seen there.


[6] Gratiolet (`De la Physionomie,' p. 324), in his
discussion on this subject, gives many analogous instances.
See p. 42, on the opening and shutting of the eyes.
Engel is quoted (p. 323) on the changed paces of a man,
as his thoughts change.

In most of the foregoing cases, we can understand how the associated
movements were acquired through habit; but with some individuals,
certain strange gestures or tricks have arisen in association with
certain states of the mind, owing to wholly inexplicable causes,
and are undoubtedly inherited. I have elsewhere given one instance
from my own observation of an extraordinary and complex gesture,
associated with pleasurable feelings, which was transmitted from
a father to his daughter, as well as some other analogous facts.[8]


[7] `Mecanisme de la Physionomie Humaine,' 1862, p. 17.

[8] `The Variation of Animals and Plants under Domestication,'
vol. ii. p. 6. The inheritance of habitual gestures is so important
for us, that I gladly avail myself of Mr. F. Galton's permission
to give in his own words the following remarkable case:--"The
following account of a habit occurring in individuals of three
consecutive generations {footnote continues:} is of peculiar interest,
because it occurs only during sound sleep, and therefore
cannot be due to imitation, but must be altogether natural.