If it were so conducted it would have the same effect, and cover a space in proportion to the strength of the current.'

'Give an example.'

'We will suppose that one pole was in one small vessel and one in another; a battleship between them would simply vanish into molecules. So also with a column of troops.'

'And you have sold this secret as a monopoly to a single European Power?'

'Yes, sir, I have. When the money is paid over they shall have such power as no nation ever had yet. You don't even now see the full possibilities if placed in capable hands hands which did not fear to wield the weapon which they held. They are immeasurable.' A gloating smile passed over the man's evil face. 'Conceive a quarter of London in which such machines have been erected. Imagine the effect of such a current upon the scale which could easily be adopted. Why,' he burst into laughter, 'I could imagine the whole Thames valley being swept clean, and not one man, woman, or child left of all these teeming millions!'

The words filled me with horror – and even more the air of exultation with which they were pronounced. They seemed, however, to produce quite a different effect upon my companion. To my surprise he broke into a genial smile and held out his hand to the inventor.

'Well, Mr. Nemor, we have to congratulate you,' said he. 'There is no doubt that you have come upon a remarkable property of nature which you have succeeded in harnessing for the use of man. That this use should be destructive is no doubt very deplorable, but Science knows no distinctions of the sort, but follows knowledge wherever it may lead. Apart from the principle involved you have, I suppose, no objection to my examining the construction of the machine?'

'None in the least. The machine is merely the body. It is the soul of it, the animating principle, which you can never hope to capture.'

'Exactly. But the mere mechanism seems to be a model of ingenuity.' For some time he walked round it and fingered its several parts. Then he hoisted his unwieldy bulk into the insulated chair.

'Would you like another excursion into the cosmos?' asked the inventor.

'Later, perhaps – later! But meanwhile there is, as no doubt you know, some leakage of electricity. I can distinctly feel a weak current passing through me.'

'Impossible. It is quite insulated.'

'But I assure you that I feel it.' He levered himself down from his perch.

The inventor hastened to take his place.

'I can feel nothing.'

'Is there not a tingling down your spine?'

'No, sir, I do not observe it.'

There was a sharp click and the man had disappeared. I looked with amazement at Challenger. 'Good heavens! Did you touch the machine, Professor?'

He smiled at me benignly with an air of mild surprise.

'Dear me! I may have inadvertently touched the handle,' said he. 'One is very liable to have awkward incidents with a rough model of this kind. This lever should certainly be guarded.'

'It is in number three. That is the slot which causes disintegration.'

'So I observed when you were operated upon.'

'But I was so excited when he brought you back that I did not see which was the proper slot for the return. Did you notice it?'

'I may have noticed it, young Malone, but I do not burden my mind with small details. There are many slots and we do not know their purpose. We may make the matter worse if we experiment with the unknown. Perhaps it is better to leave matters as they are.'

'And you would-'

'Exactly. It is better so.