Doctor Winchester had evidently been following the logical process of the other’s mind, for his comment was: 

“I do hope that when the light is effective in opening the box, the mechanism will not be impaired or destroyed.”

His doubt as to this gave anxious thought to some of us.

Chapter XVI The Cavern

In the evening Mr. Trelawny took again the whole party into the study.  When we were all attention he began to unfold his plans: 

“I have come to the conclusion that for the proper carrying out of what we will call our Great Experiment we must have absolute and complete isolation.  Isolation not merely for a day or two, but for as long as we may require.  Here such a thing would be impossible; the needs and habits of a great city with its ingrained possibilities of interruption, would, or might, quite upset us.  Telegrams, registered letters, or express messengers would alone be sufficient; but the great army of those who want to get something would make disaster certain.  In addition, the occurrences of the last week have drawn police attention to this house.  Even if special instructions to keep an eye on it have not been issued from Scotland Yard or the District Station, you may be sure that the individual policeman on his rounds will keep it well under observation.  Besides, the servants who have discharged themselves will before long begin to talk.  They must; for they have, for the sake of their own characters, to give some reason for the termination of a service which has I should say a position in the neighbourhood.  The servants of the neighbours will begin to talk, and, perhaps the neighbours themselves.  Then the active and intelligent Press will, with its usual zeal for the enlightenment of the public and its eye to increase of circulation, get hold of the matter.  When the reporter is after us we shall not have much chance of privacy.  Even if we were to bar ourselves in, we should not be free from interruption, possibly from intrusion.  Either would ruin our plans, and so we must take measures to effect a retreat, carrying all our impedimenta with us.  For this I am prepared.  For a long time past I have foreseen such a possibility, and have made preparation for it.  Of course, I had no foreknowledge of what has happened; but I knew something would, or might, happen.  For more than two years past my house in Cornwall has been made ready to receive all the curios which are preserved here.  When Corbeck went off on his search for the lamps I had the old house at Kyllion made ready; it is fitted with electric light all over, and all the appliances for manufacture of the light are complete.  I had perhaps better tell you, for none of you, not even Margaret, knows anything of it, that the house is absolutely shut out from public access or even from view.  It stands on a little rocky promontory behind a steep hill, and except from the sea cannot be seen.