the measure of any individual mind”—“the communal spirit of the successive generations”—“the community” which is “greater than its members who exist at any one time”; all these are alternative designations of that organised system of mental forces which exists over and above, though not independently of, the individuals in each of whom some fragment of it is embodied and which is the group mind. And the writer of this statement is Mr R. M. Maciver; the passage occurs in the section of his book designed to “clear out of the way this misleading doctrine of super-individual minds.” In the same section he goes on to say that “every association, every organised group, may and does have rights and obligations which are not the rights and obligations of any or all of its members taken distributively but only of the association acting as an organised unity.... As a unity the association may become a ‘juristic person,’ a ‘corporation,’ and from the legal standpoint the character of unity so conceived is very important.... The ‘juristic person’ is a real _unity_, and therefore more than a _persona ficta_, but the reality it possesses is of a totally different order of being from that of the persons who establish it.” But, perversely as it seems to me, Maciver adds “the unity of which we are thinking is not mechanic or organic or even psychic.” I cannot but think that, in thus denying the organic and psychic nature of this unity, Maciver is under the influence of that unfortunate and still prevalent way of thinking of the psychic as identical with the conscious which has given endless trouble in psychology; because it has prompted the hopeless attempt, constantly renewed, to describe the structure and organisation of the mind in terms of conscious stuff, ignoring the all-important distinction between mental activity, which is sometimes, though perhaps not always, consciousness, and mental structure which is not. The structure and organisation of the spirit of the community is in every respect as purely mental or psychic as is the structure and organisation of the individual mind.