I cannot doubt that the popular mind is vaguely alarmed by the doctrine. I read, the other day, a novel by a well-known author, of which, so far as I can remember, the main substance was as follows: A virtuous doctor (his virtue had some limitations) studied the problem of heredity, and had read Darwin, and Herbert Spencer, and Weissmann, and all the proper authorities. His own researches are carefully described, with the apparent assumption that they were both profound and of tremendous significance. He had, it appears, accumulated a vast amount of material; and his method was to cut out slips from newspapers, whenever they recorded any events in his own family history, and to preserve them in a mysterious cabinet. These investigations proved that there was a decided family likeness running through the descendants of a common ancestor. As a general rule, they had all belonged to the class "blackguard". From this result he inferred that there was no God and no soul. His relations were dreadfully scandalised: one was converted to his views; but the others contrived diabolical plots for setting fire to these marvellous collections and so stopping the contagion of these dreadful doctrines at their source. It struck me, I confess, that instead of burning the collections, they would have done better to ask him what was the connection between his premisses and his conclusions. What was this terrible, heart-paralysing truth which the poor man had discovered? Has any human being ever doubted, since mothers were invented, that children are apt to resemble their parents? I do not personally remember the fact, but I should be prepared to bet, if the point could be settled, that, before I was a month old,--and in those days neither Darwin nor Weissmann had published a line,--my nurse and my mother had affirmed that the baby was like his papa. That, at any rate, is a remark, the omission of which would show more originality than the assertion. If I desired, again, to produce classical authority for the importance of race, I should not have to extend my researches beyond the Latin Grammar. If, once more, we look into the writings of famous theologians, we meet it everywhere. I take the first that comes to hand. "Good men," says Calvin, "and beyond all others, Augustine, have laboured to demonstrate, that we are not corrupted by any adventitious means but that we derive an innate depravity from our very birth." The denial of this was an instance of consummate impudence--reserved, as Calvin shows, for such wicked heretics as Pelagius. The doctrine of heredity, in short, in a theological version, is essentially involved in the dogmatic foundations of the orthodox creed. I have no doubt that an investigation of the reasonings of Augustine and others would exhibit much affinity to modern controversy, though in a very different terminology. Whatever we may think of its merits, the doctrine of original sin implies that a depraved nature may have been transmitted to the whole human race; and, if the commonly alleged cause of the original depravity strikes us as insufficient, it is, at least, a very familiar argument of divines, that the doctrine corresponds to undeniable facts. Why should it startle us in a scientific dress? If we can transmit depravity, why not genius and bodily health? In one respect, modern theories tend rather to limit than to extend the applicability of the principle. No one ever doubted, nor could doubt, that the child of a monkey is always a monkey; and that the child of a negro, or even of a Mongol, has certain characteristics which distinguish it from the child of a European. But the difference is that, whereas it used to be held that there was an impassable barrier between the monkey and the man, it is now widely believed that both may be descendants from a common ancestor. Should this belief establish itself, we shall have to admit that, in spite of heredity, organic forms are capable of much wider variation than was believed by our fathers to be even conceivable.