Thus, I have omitted to mention that sometimes the totems seem to have nothing to do at all with the social organization; as, for example, amongst the famous Arunta of central Australia, whom Messrs.

Spencer and Gillen have so carefully described.

I have, again, refrained from pointing out that sometimes there are exogamous divisions--some would call them moieties to distinguish them from phratries--which have no clans grouped under them, and, on the other hand, have themselves little or no resemblance to totemic clans.

These, and ever so many other exceptional cases, I have simply passed by.
An even more serious kind of omission is the following.

I have throughout identified the social organization with the kinship organization--namely, that into which a man is born in consequence of the marriage laws and the system of reckoning descent.