Chapter 25

Lady Arabella had instructed her solicitors to hurry on with the conveyance of Diana's Grove, so no time was lost in letting Adam Salton have formal possession of the estate. After his interview with Sir Nathaniel, he had taken steps to begin putting his plan into action. In order to accumulate the necessary amount of fine sea-sand, he ordered the steward to prepare for an elaborate system of top-dressing all the grounds. A great heap of the sand, brought from bays on the Welsh coast, began to grow at the back of the Grove. No one seemed to suspect that it was there for any purpose other than what had been given out.

Lady Arabella, who alone could have guessed, was now so absorbed in her matrimonial pursuit of Edgar Caswall, that she had neither time nor inclination for thought extraneous to this. She had not yet moved from the house, though she had formally handed over the estate.

Adam put up a rough corrugated-iron shed behind the Grove, in which he stored his explosives. All being ready for his great attempt whenever the time should come, he was now content to wait, and, in order to pass the time, interested himself in other things--even in Caswall's great kite, which still flew from the high tower of Castra Regis.

The mound of fine sand grew to proportions so vast as to puzzle the bailiffs and farmers round the Brow. The hour of the intended cataclysm was approaching apace. Adam wished--but in vain--for an opportunity, which would appear to be natural, of visiting Caswall in the turret of Castra Regis. At last, one morning, he met Lady Arabella moving towards the Castle, so he took his courage E DEUX MAINS and asked to be allowed to accompany her. She was glad, for her own purposes, to comply with his wishes. So together they entered, and found their way to the turret-room. Caswall was much surprised to see Adam come to his house, but lent himself to the task of seeming to be pleased. He played the host so well as to deceive even Adam. They all went out on the turret roof, where he explained to his guests the mechanism for raising and lowering the kite, taking also the opportunity of testing the movements of the multitudes of birds, how they answered almost instantaneously to the lowering or raising of the kite.

As Lady Arabella walked home with Adam from Castra Regis, she asked him if she might make a request. Permission having been accorded, she explained that before she finally left Diana's Grove, where she had lived so long, she had a desire to know the depth of the well- hole. Adam was really happy to meet her wishes, not from any sentiment, but because he wished to give some valid and ostensible reason for examining the passage of the Worm, which would obviate any suspicion resulting from his being on the premises. He brought from London a Kelvin sounding apparatus, with a sufficient length of piano-wire for testing any probable depth. The wire passed easily over the running wheel, and when