"If you will consult a common text-book on the physics of the ether," he replied, "you will find that one grain of matter contains sufficient energy, if etherised, to raise a hundred thousand tons nearly two miles. In face of such potentiality it is not wise to wreck incautiously even the atoms of a molecule."
"And the limits to this description of scientific experiment? Where are they?"
"There are no limits," Brande said decisively. "No man can say to science 'thus far and no farther.' No man ever has been able to do so. No man ever shall!"
CHAPTER III.
"IT IS GOOD TO BE ALIVE."
Amongst the letters lying on my breakfast-table a few days after the meeting was one addressed in an unfamiliar hand. The writing was bold, and formed like a man's. There was a faint trace of a perfume about the envelope which I remembered. I opened it first.
It was, as I expected, from Miss Brande. Her brother had gone to their country place on the southern coast. She and her friend, Edith Metford, were going that day. Their luggage was already at the station. Would I send on what I required for a short visit, and meet them at eleven o'clock on the bridge over the Serpentine? It was enough for me. I packed a large portmanteau hastily, sent it to Charing Cross, and spent the time at my disposal in the park, which was close to my hotel.
Although the invitation I had received gave me pleasure, I could not altogether remove from my mind a vague sense of disquietude concerning Herbert Brande and his Society. The advanced opinions I had heard, if extreme, were not altogether alarming. But the mysterious way in which Brande himself had spoken about the Society, and the still more mysterious air which some of the members assumed when directly questioned as to its object, suggested much. Might it not be a revolutionary party engaged in a grave intrigue—a branch of some foreign body whose purpose was so dangerous that ordinary disguises were not considered sufficiently secure? Might they not have adopted the jargon and pretended to the opinions of scientific faddists as a cloak for designs more sinister and sincere? The experiment I witnessed might be almost a miracle or merely a trick. Thinking it over thus, I could come to no final opinion, and when I asked myself aloud, "What are you afraid of?" I could not answer my own question. But I thought I would defer joining the Society pending further information.
A few minutes before eleven, I walked towards the bridge over the Serpentine. No ladies appeared to be on it. There were only a couple of smartly dressed youths there, one smoking a cigarette. I sauntered about until one of the lads, the one who was not smoking, looked up and beckoned to me. I approached leisurely, for it struck me that the boy would have shown better breeding if he had come toward me, considering my seniority.