This is the fifth of a series of six articles examining respectively t
he six concepts of consciousness identified in the main entries of the
Oxford English Dictionary under the word. I call the concept of consc
iousness(5) the unitive meaning because it is said to refer to the tot
ality of mental-occurrence instances that constitute a person's consci
ous being. The present article consists mainly of an effort to answer
the question of which totality of metal-occurrence instances it is to
which the fifth concept refers. Four possible answers are considered,
and the fourth, derived form Locke, is found to capture best the dicti
onary's meaning. Accordingly, consciousness(5) is a certain subjective
ly determined unity of mental-occurrence instances that is further spe
cified, of course, in the article. However, I also consider, finally,
that the compilers of the dictionary may have had something more objec
tive in mind as well, another meaning toward which the word is tending
if it has not already arrived there. This further sense may amount to
an identification of consciousness with those components of James's s
tream that he described as ''the Very core and nucleus of our self as
we know it, the very sanctuary of our life.''