RETENTION AND REPRODUCTION.1
OUR states of consciousness, as a general fact, are all liable to reproduction, recall, or revival. The original states of consciousness are designated Presentations, or primary states; and the corresponding revived states, to which they give rise, Representations, or Secondary states.
The capacity to be revived on suitable conditions extends to all states of consciousness. This revival is most vivid and facile for sensations of sight, touch, and sound, from the fact already noticed that these sensations are mostly presentative, having the forms of space and time. Objects seen are readily pictured when the eyes are closed, and sounds of tunes, and more especially of words, are reproduced with great ease. In reading a page we recall the sounds of the spoken words involuntarily; and, if it be a page of poetry, the rhythm and rhyme are caught by the quick revival of the words and measures in succession. Other sensations, as tastes and odors, are also capable of reproduction. The fact that we distinguish and classify them is sufficient proof of this. Their reproduction is more obscure from the fact that, being more affective, they cannot be pictured under the presentative forms of time____________________