between them; and volition he identifies with the feeling of desire and is therefore included as a type of sensation.

Considered for the influences of his philosophy, de Tracy minimally deserves credit for his distinction between active and passive touch which ultimately fed the development of psychological theories of muscular sense. His account of the notion of external existence as being derived not from pure sensation, but from the experience of action on the one hand and resistance on the other, stands in this light to be compared