Does this mean that every risk of telepathy is done away with? It would perhaps be rash to make a categorical assertion. The power and extent of telepathy are as yet, we cannot too often repeat, indefinite, indiscernible, untraceable and unlimited. We have but quite lately discovered it, we know only that its existence can no longer be denied; but, as for all the rest, we are at much the same stage as that whereat Galvani was when he gave life to the muscles of his dead frogs with two little plates of metal which roused the jeers of the scientists of his time, but contained the germ of all the wonders, of electricity. Nevertheless, as regards telepathy in the sense in which we understand and know it to-day, my mind is made up. I am persuaded that it is not in this direction that we must seek for an explanation of the phenomenon; or, if we are determined to find it there, the explanation becomes complicated with so many subsidiary mysteries that it is better to accept the prodigy as it stands, in its original obscurity and simplicity. When, for instance, I was copying out one of the grisly problems which I have mentioned, it is quite certain that my conscious intelligence could make neither head nor tail of it. I did not so much as know what it meant or whether the exponent 3. 4. 5 called for a multiplication, a division or some other mathematical operation which I did not even try to imagine; and, rack MY memory as I may, I cannot remember any moment in my life when I knew more about it than I do now. We should therefore have to admit that MY subliminal self is a born mathematician, quick, infallible and endowed with boundless learning. It is possible and I feel a certain pride at the thought. But the theory simply shifts the miracle by making it pass from the horse's soul to mine; and the miracle becomes no clearer by the transfer, which, for that matter, does not sound probable. I need hardly add that, a fortiori, Dr. Hamel's experiments and many others which I have not here the space to describe finally dispose of the theory. 17 Let us see how those who have interested themselves in these extraordinary manifestations have attempted to explain them. As we go along, we will just shear through the feeble undergrowth of childish theories. I shall not, therefore, linger over the suggestions of cheating, of manifest signs addressed to the eye or ear, of electrical installations that are supposed to control the answers, nor other idle tales of an excessively clumsy character. To realize their inexcusable inanity we have but to spend a few minutes in the honest Elberfeld stable.