have habits of thinking and willing, while character itself is in part an accumulation of habits, nevertheless habits are chiefly cerebral and demand a physiological explanation. A German physiologist has said that we learn to skate in summer and to swim in winter. It is long before the half-spent motions of the organism produce their total effects upon us, and many motions go on incessantly. It is a matter of parsimony in scientific explanation to account for as many results as we can by referring them to these processes of the brain. When we start out on a fortunate day finding that we can ride a bicycle, after various attempts and clumsy failures in the days that have gone, this simply means that the organism has acquired the habit. Likewise with many other consequences. We may have initiated the action consciously, as the boy emulates his elders and tries to whistle; but when the result ensues it does not follow that a hidden mental process has accompanied and directed the new activity. We all know what it is to get our brains into a whirl such that consciousness cannot intervene. The more carefully trained the brain is through consecutive and systematic work, the more we may depend on it to exhibit the measured consequences of orderly activity. When we discover how much the association of cerebral events and conditions can accomplish for us it is time to speak of subconsciousness