I think the words subliminal and supraliminal unfortunate, but they were probably unavoidable. I think, too, that Myers' belief in the ubiquity and great extent of the Subliminal will demand a far larger number of facts than sufficed to persuade him, before the next generation of psychologists shall become persuaded. He regards the Subliminal as the enveloping mother-consciousness in each of us, from which the consciousness we wot of is precipitated like a crystal. But whether this view get confirmed or get overthrown by future inquiry, the definite way in which Myers has thrown it down is a new and specific challenge to inquiry. For half a century now, psychologists have fully admitted the existence of a subliminal mental region, under the name either of unconscious cerebration or of the involuntary life; but they have never definitely taken up the question of the extent of this region, never sought explicitly to map it out. Myers definitely attacks this problem, which, after him, it will be impossible to ignore. _What is the precise constitution of the Subliminal_--such is the problem which deserves to figure in our Science hereafter as the _problem of Myers_; and willy-nilly, inquiry must follow on the path which it has opened up. But Myers has not only propounded the Problem definitely, he has also invented definite methods for its solution. Posthypnotic suggestion, crystal-gazing, automatic writing and trance-speech, the willing-game, etc., are now, thanks to him, instruments of research, reagents like litmus paper or the galvanometer, for revealing what would otherwise be hidden. These are so many ways of putting the Subliminal on tap. Of course without the simultaneous work on hypnotism and hysteria independently begun by others, he could not have pushed his own work so far. But he is so far the only generalizer of the problem and the only user of all the methods; and even though his theory of the extent of the Subliminal should have to be subverted in the end, its formulation will, I am sure, figure always as a rather momentous event in the history of our Science.