It is certainly noteworthy that the embryo is never at a loss, unless something happens to it which has not usually happened to its forefathers, and which in the nature of things it cannot remember.
When events are happening to it which have ordinarily happened to its forefathers, and which it would therefore remember, if it was possessed of the kind of memory which we are here attributing to it, _it acts precisely as it would act if it were possessed of such memory_.
When, on the other hand, events are happening to it which, if it has the kind of memory we are attributing to it, would baffle that memory, or which have rarely or never been included in the category of its recollections, _it acts precisely as a creature acts when its recollection is disturbed_, _or when it is required to do something which it has never done before_.
We cannot remember having been in the embryonic stage, but we do not on that account deny that we ever were in such a stage at all. On a little reflection it will appear no more reasonable to maintain that, when we were in the embryonic stage, we did not remember our past existences, than to say that we never were embryos at all. We cannot remember what we did or did not recollect in that state; we cannot now remember having grown the eyes which we undoubtedly did grow, much less can we remember whether or not we then remembered having grown them before; but it is probable that our memory was then, in respect of our previous existences as embryos, as much more intense than it is now in respect of our childhood, as our power of acquiring a new language was greater when we were one or two years old, than when we were twenty. And why should this power of acquiring languages be greater at two years than at twenty, but that for many generations we have learnt to speak at about this age, and hence look to learn to do so again on reaching it, just as we looked to making eyes, when the time came at which we were accustomed to make them.
If we once had the memory of having been infants (which we had from day to day during infancy), and have lost it, we may well have had other and more intense memories which we have lost no less completely. Indeed, there is nothing more extraordinary in the supposition that the impregnate ovum has an intense sense of its continuity with, and therefore of its identity with, the two impregnate ova from which it has sprung, than in the fact that we have no sense of our continuity with ourselves as infants. If then, there is no _à priori_ objection to this view, and if the impregnate ovum acts in such a manner as to carry the strongest conviction that it must have already on many occasions done what it is doing now, and that it has a vivid though unconscious recollection of what all, and more especially its nearer, ancestral ova did under similar circumstances, there would seem to be little doubt what conclusion we ought to come to.