Quite a considerable something, too.

And it took much longer than they expected.
A hasty rush into the boys' room secured the Psammead, very sandy and very cross.
'It doesn't matter how cross and sandy it is though,' said Anthea, 'it ought to be there at the final council.' 'It'll give the learned gentleman fits, I expect,' said Robert, 'when he sees it.' But it didn't.
'The dream is growing more and more wonderful,' he exclaimed, when the Psammead had been explained to him by Rekh-mara.

'I have dreamed this beast before.' 'Now,' said Robert, 'Jane has got the half Amulet and I've got the whole.

Show up, Jane.' Jane untied the string and laid her half Amulet on the table, littered with dusty papers, and the clay cylinders marked all over with little marks like the little prints of birds' little feet.

Robert laid down the whole Amulet, and Anthea gently restrained the eager hand of the learned gentleman as it reached out yearningly towards the 'perfect specimen'.
And then, just as before on the Marcella quilt, so now on the dusty litter of papers and curiosities, the half Amulet quivered and shook, and then, as steel is drawn to a magnet, it was drawn across the dusty manuscripts, nearer and nearer to the perfect Amulet, warm from the pocket of Robert.