protected situation.

Faculties{94} distinct from true instincts,--finding [way]. It must I
think be admitted that habits whether congenital or acquired by practice
[sometimes] often become inherited{95}; instincts, influence, equally
with structure, the preservation of animals; therefore selection must,
with changing conditions tend to modify the inherited habits of animals.
If this be admitted it will be found _possible_ that many of the
strangest instincts may be thus acquired. I may observe, without
attempting definition, that an inherited habit or trick (trick because
may be born) fulfils closely what we mean by instinct. A habit is often
performed unconsciously, the strangest habits become associated, d^o.
tricks, going in certain spots &c. &c., even against will, is excited by
external agencies, and looks not to the end,--a person playing a
pianoforte. If such a habit were transmitted it would make a marvellous
instinct. Let us consider some of the most difficult cases of instincts,
whether they could be _possibly_ acquired. I do not say _probably_, for
that belongs to our 3rd Part{96}, I beg this may be remembered, nor do I
mean to attempt to show exact method. I want only to show that whole
theory ought not at once to be rejected on this score.

{94} In the MS. of 1844 is an interesting discussion on _faculty_
as distinct from _instinct_.

{95} At this date and for long afterwards the inheritance of
acquired characters was assumed to occur.

{96} Part II. is here intended: see the Introduction.

Every instinct must, by my theory, have been acquired gradually by
slight changes <illegible> of former instinct, each change being useful
to its then species. Shamming death struck me at first as remarkable
objection. I found none really sham death{97}, and that there is
gradation; now no one doubts that those insects which do it either more
or less, do it for some good, if then any species was led to do it more,
and then <?> escaped &c. &c.

{97} The meaning is that the attitude assumed in _shamming_ is not
accurately like that of death.

Take migratory instincts, faculty distinct from instinct, animals have
notion of time,--like savages. Ordinary finding way by memory, but how
does savage find way across country,--as incomprehensible to us, as
animal to them,--geological changes,--fishes in river,--case of sheep in
Spain{98}. Architectural instincts,--a manufacturer's employ