" The standpoints of science and metaphysics Tfo scientific method of interpretation The relation of mental process to physiological process An interpretative ideal construction Some implications of the doctrine of continuity A hybrid universe of discourse Instinc- tive and intelligent behaviour The primary tissue of experience Metaphysical criticisms of a scientific conception in genetic terms Sketch of the stages of development of experience Plea for keeping distinct the scientific qnd the metaphysical universe of discourse.

I PROPOSE to approach the problem of the genesis of experience in the individual mind along lines that are purely naturalistic, through the avenue of biological and psychological considerations.

I propose also to consider the relation of this problem to that with which the metaphysician is concerned.

I shall endeavour to render clear what I understand by science : what by metaphysics.

The standpoint and the initial postulates of science are profoundly different from those of metaphysics.