their aural mechanism doubtless prevents the ex-
citations from being sharply defined, a condition
which may properly be designated amblacousia.

Local sign may have something to do with the
baffling composition of odors. Some of the peculiar
similarities, and differences of smell sensation may
really be identities and differences of local sign.
We must remember that we never experience the
local sign of dermal or visual sensation without its
associative connection with space, nor local sign
of auditory sensation apart from the corresponding
extensity; hence, local sign unassociated with either
of these factors, or associated with extensity in a
non-serial way, would not be naïvely identified.

-145-