All secondary automatic reactions may be classed here; the sensations coming from one action, as in walking, being suggestions to the next movement, unconsciously acted upon.

The consciousness at any stage in the chain of movements, if present at all, must be similar to the baby's in the case above--a mere internal glimmering.

The most we can say of such physiological suggestion is, that there is probably some consciousness, and that the ordinary reflexes seem to be abbreviated and improved.
_Subconscious Adult Suggestion._--There are certain phenomena of a rather striking kind coming under this head whose classification is so evident that we may enumerate them without discussion of the general principles which they involve.
_Tune Suggestion._--It has been pointed out recently that dream states are largely indebted for their visual elements--what we see in our dreams--to accidental lines, patches, etc., in the field of vision when the eyes are shut, due to the distended blood vessels of the cornea and lids, to changes in the external illumination, to the presence of dust particles of different configuration, etc.

The other senses also undoubtedly contribute to the texture of our dreams by equally subconscious suggestions.

There is no doubt, further, that our waking life is constantly influenced by such trivial stimulations.
I have tested in detail, for example, the conditions of the rise of so-called "internal tunes"-- we speak of "tunes in our head" or "in our ears"-- and find certain suggestive influences which in most cases cause these tunes to rise and take their course.