Michael dawdled behind. He stooped and gathered up a handful of snow and rolled it between his palms.
"Jane, dear!" he called in a wheedling voice. "I've got something for you!"
She turned, and the snowball, whizzing through the air, caught her on the shoulder. With a squeal she began to burrow in the snow and presently there were snowballs flying through the air in every direction. And in and out, among the tossing, glistening balls, walked Mary Poppins, very prim and neat, and thinking to herself how handsome she looked in her large woolen gloves and her rabbit-skin coat.
And just as she was thinking that, a large snowball grazed past the brim of her hat and landed right on her nose.
"Oh!" screamed Michael, putting up both hands to his mouth. "I didn't mean to, Mary Poppins! I didn't, really. It was for Jane."
Mary Poppins turned and her face, as it appeared through the fringe of broken snowball, was terrible.
"Mary Poppins," he said earnestly. "I'm sorry. It was a Naccident!"
"A Naccident or not!" she retorted. "That's the end of your snowballing. Naccident, indeed! A Zulu would have better manners!"
She plucked the remains of the snowball from her neck and rolled them into a small ball between her woolen palms. Then she flung the ball right across the snowy lawn and went stamping haughtily after it.
"Now you've done it," whispered Jane.
"I didn't mean to," Michael whispered back.
"I know. But you know what she is!"
Mary Poppins, arriving at the place where the snowball had fallen, picked it up and threw it again, a long powerful throw.
"Where is she going?" said Michael suddenly. For the snowball was bowling away under the trees and, instead of keeping to the path, Mary Poppins was hurrying after it. Every now and then she dodged a little fall of snow as it tumbled softly from a branch.
"I can hardly keep up!" said Michael, stumbling over his own feet.
Mary Poppins quickened her steps. The children panted behind her. And when at last they caught up with the snowball, they found it lying beside the strangest building they had ever seen.
"I don't remember seeing this house before!" exclaimed Jane, her eyes wide with surprise.
"It's more like an Ark than a house," said Michael, staring.
The house stood solidly in the snow, moored by a thick rope to the trunk of a tree. Round it, like a verandah, ran a long narrow deck and its high peaked roof was painted bright scarlet. But the most curious thing about it was that though it had several windows there was not a single door.
"Where are we?" said Jane, full of curiosity and excitement.
Mary Poppins made no reply. She led the way along the deck and stopped in front of a notice that said,
"KNOCK THREE AND A HALF TIMES"
"What is half a knock?" whispered Michael to Jane.
"Sh!" she said, nodding towards Mary Poppins. And her nod said as clearly as if she had spoken—"We're on the brink of an Adventure. Don't spoil it by asking questions!"
Mary Poppins, seizing the knocker that hung above the notice, swung it upwards and knocked three times against the wall. Then, taking it daintily between the finger and thumb of her woolen glove, she gave the merest, tiniest, smallest, gentlest tap.
Like this.
RAP! RAP! RAP!… tap.
Immediately, as though it had been listening and waiting for that signal, the roof of the building flew back on its hinges.
"Goodness Graciousness!" Michael could not restrain the exclamation, for the wind of the roof, as it swung open, nearly lifted his hat off.
Mary Poppins walked to the end of the narrow deck and began to climb a small, steep ladder. At the top she turned, and looking very solemn and important, beckoned with a woolly finger.
"Step up, please!"
The four children hurried after her.
"Jump!" cried Mary Poppins, leaping down from the top of the ladder into the house. She turned and caught the Twins as they came tumbling over the edge with Jane and Michael after them. And as soon as they were all safely inside, the roof closed over again and shut with a little click.
They gazed round them. Four pairs of eyes popped with surprise.
"What a funny room!" exclaimed Jane.
But it was really more than funny. It was extraordinary. The only piece of furniture in it was a large counter that ran along one end of the room. The walls were white-washed, and leaning against them were piles of wood cut into the shape of trees and branches and all painted green. Small wooden sprays of leaves, newly painted and polished, were scattered about the floor. And several notices hung from the walls saying:
"MIND THE PAINT!"
or
"DON'T TOUCH!"
or
"KEEP OFF THE GRASS!"
But this was not all.
In one corner stood a flock of wooden sheep with the dye still wet on their fleeces. Crowded in another were small stiff groups of flowers — yellow aconites, green-and-white snow-drops and bright blue scyllas. All of them looked very shiny and sticky as though they had been newly varnished. So did the wooden birds and butterflies that were neatly piled in a third corner. So did the flat white wooden clouds that leant against the counter.
But the enormous jar that stood on a shelf at the end of the room was not painted. It was made of green glass and filled to the brim with hundreds of small flat shapes of every kind and colour.
"You're quite right, Jane," said Michael staring. "It is a funny room!"
"Funny!" said Mary Poppins, looking as though he had said something insulting.
"Well — peculiar."
"PECULIAR?"
Michael hesitated. He could not find the right word.
"What I meant was—"
"I think it's a lovely room, Mary Poppins—" said Jane, hastily coming to the rescue.
"Yes it is," said Michael, very relieved. "And—" he added cleverly, "I think you look very nice in that hat."
He watched her carefully. Yes, her face was a little softer — there were even faint beginnings of a conceited smile around her mouth.
"Humph!" she remarked and turned towards the end of the room.
"Nellie-Rubina!" she called. "Where are you? We've arrived!"
"Coming! Coming!"
The highest, thinnest voice they had ever heard seemed to rise up from beneath the counter. And, presently, from the same direction as the voice, a head, topped with a small flat hat, popped up. It was followed by a round, rather solid body that held in one hand a pot of red paint and in the other a plain wooden tulip.
Surely, surely, thought Jane and Michael, this was the strangest person they had ever seen.
From her face and size she seemed to be quite young but somehow she looked as though she were made, not of flesh, but of wood. Her stiff, shiny black hair seemed to have been carved on her head and then painted. Her eyes were like small black holes drilled in her face, and surely that bright pink patch on her shiny cheek was paint!
"Well, Miss Poppins!" said this curious person, her red lips glistening as she smiled. "This is nice of you, I must say!" And putting down the paint and the tulip, she came round the counter and shook hands with Mary Poppins.
Then it was that the children noticed she had no legs at all! She was quite solid from the waist downwards and moved with a rolling motion by means of a round flat disc that was where her feet should have been.
"Not at all, Nellie-Rubina," said Mary Poppins, with unusual politeness. "It is a Pleasure and a Treat!"
"We've been expecting you, of course," Nellie-Rubina went on, "because we wanted you to help with the—" She broke off, for not only had Mary Poppins flashed her a warning look, but she had caught sight of the children.