The one you've got is a good many years older, but at any rate it's not the other one.

What did you say when you wished ?' 'I forget,' said Jane.
'I don't,' said the Psammead.

'You said, "Take us where YOU are"-- and it did, so you see it was the same half.' 'I see,' said Anthea.
'But you mark my words,' the Psammead went on, 'you'll have trouble with that Priest yet.' 'Why, he was quite friendly,' said Anthea.
'All the same you'd better beware of the Reverend Rekh-mara.' 'Oh, I'm sick of the Amulet,' said Cyril, 'we shall never get it.' 'Oh yes we shall,' said Robert.

'Don't you remember December 3rd ?' 'Jinks!' said Cyril, 'I'd forgotten that.' 'I don't believe it,' said Jane, 'and I don't feel at all well.' 'If I were you,' said the Psammead, 'I should not go out into the Past again till that date.

You'll find it safer not to go where you're likely to meet that Egyptian any more just at present.' 'Of course we'll do as you say,' said Anthea soothingly, 'though there's something about his face that I really do like.' 'Still, you don't want to run after him, I suppose,' snapped the Psammead.