That is why when, several years after the Doctor had left this country, some missionaries visited that part of Africa, they found to their astonishment that Christmas was celebrated there, although the people were heathens. But they never learned that the custom had been brought about by Cheapside, the cheeky London sparrow.

And now very soon Cheapside took entire charge of the city delivery of mails in Fantippo. Of course, as soon as the mail began to get heavy, when the people got the habit of writing more to their friends and relatives, Cheapside could not deal with all the mail himself. So he sent a message by a swallow to get fifty sparrows from the streets of London (who were, like himself, accustomed to city ways), to help him with the delivery of letters. And around the native holiday seasons, the Harvest Moon and the Coming of the Rains, he had to send for fifty more to deal with the extra mail.

And if you happened to pass down the main street of Fantippo at nine in the morning or four in the afternoon you would hear the Rat-tat-tat of the post-sparrows, knocking on the doors—Tat-tat, if it was a real letter, and just Rat! if it was a bill.

Of course, they could not carry more than one or two letters at a time—being such small birds. But it only took them a moment to fly back to the houseboat for another load, where Too-Too was waiting for them at the "city" window with piles of mail, sorted out into boxes marked "Central," "West Central," "Southwest," etc., for the different parts of the town. This was another idea of Cheapside's, to divide up the city into districts, the same as they did in London, so the mail could be delivered quickly without too much hunting for streets.

Cheapside's help was, indeed, most valuable to the Doctor. The King himself said that the mails were wonderfully managed. The letters were brought regularly and never left at the wrong house.

He had only one fault, had Cheapside. And that was being cheeky. Whenever he got into an argument his Cockney swearing was just dreadful. And in spite of the Doctor's having issued orders time and time again that he expected his post office clerks and mail birds to be strictly polite to the public, Cheapside was always getting into rows—which he usually started himself.

One day when King Koko's pet white peacock came to the Doctor and complained that the Cockney sparrow had made faces at him over the palace wall the Doctor became quite angry and read the City Manager a long lecture.