So much for the conclusions in regard to the larger aspect of life taken as a whole which must follow from confining life to protoplasm; but there is another aspect—that, namely, which regards the individual. The inevitable consequences of confining life to the protoplasmic parts of the body were just as unexpected and unwelcome here as they had been with regard to life at large; for, as I have already pointed out, there is no drawing the line at protoplasm and resting at this point; nor yet at the next halting-point beyond; nor at the one beyond that. How often is this process to be repeated? and in what can it end but in the rehabilitation of the soul as an ethereal, spiritual, vital principle, apart from matter, which, nevertheless, it animates, vivifying the clay of our bodies? No one who has followed the course either of biology or psychology during this century, and more especially during the last five-and-twenty years, will tolerate the reintroduction of the soul as something apart from the substratum in which both feeling and action must be held to inhere. The notion of matter being ever changed except by other matter in another state is so shocking to the intellectual conscience that it may be dismissed without discussion; yet if bathybius had not been promptly dealt with, it must have become apparent even to the British public that there were indeed but few steps from protoplasm, as the only living substance, to vital principle. Our biologists therefore stifled bathybius, perhaps with justice, certainly with prudence, and left protoplasm to its fate.