Polly says that by magic, and when Digory agrees she figures that they've not a magician, but has traveled on another's magic.
If you need to understand the diversity of the nation then this can be the place to go to. http://xceligent.com/__media__/js/netsoltrademark.php?d=directoryfrenzy.com%2Flistings12801182%2Fdiyarbak%25C4%25B1r-escort-no-further-mystery