'You would hardly believe,' he said, 'that anyone COULD have such a detailed vision.' But Anthea could believe it, she said, quite easily.
He had ceased to talk about thought-transference.

He had now seen too many wonders to believe that.
In consequence of their breathless condition none of the children suggested any new excursions through the Amulet.

Robert voiced the mood of the others when he said that they were 'fed up' with Amulet for a bit.

They undoubtedly were.
As for the Psammead, it went to sand and stayed there, worn out by the terror of the flood and the violent exercise it had had to take in obedience to the inconsiderate wishes of the learned gentleman and the Babylonian queen.
The children let it sleep.

The danger of taking it about among strange people who might at any moment utter undesirable wishes was becoming more and more plain.
And there are pleasant things to be done in London without any aid from Amulets or Psammeads.