The Doctor roused himself.

"Cross? How could I be? You're a very sensible little woman. Now look here, don't you worry. I'll make it all right with your Mother, even if I have to make a special brand-new Club all for her. Look here, this is where the Aqueduct begins."

"What's an Aque--what's its name?" asked Bobbie.

"A water bridge," said the Doctor. "Look."

The road rose to a bridge over the ca.n.a.l. To the left was a steep rocky cliff with trees and shrubs growing in the cracks of the rock. And the ca.n.a.l here left off running along the top of the hill and started to run on a bridge of its own--a great bridge with tall arches that went right across the valley.

Bobbie drew a long breath.

"It IS grand, isn't it?" she said. "It's like pictures in the History of Rome."

"Right!" said the Doctor, "that's just exactly what it IS like.

The Romans were dead nuts on aqueducts. It's a splendid piece of engineering."

"I thought engineering was making engines."

"Ah, there are different sorts of engineering--making road and bridges and tunnels is one kind. And making fortifications is another. Well, we must be turning back. And, remember, you aren't to worry about doctor's bills or you'll be ill yourself, and then I'll send you in a bill as long as the aqueduct."

When Bobbie had parted from the Doctor at the top of the field that ran down from the road to Three Chimneys, she could not feel that she had done wrong. She knew that Mother would perhaps think differently.

But Bobbie felt that for once she was the one who was right, and she scrambled down the rocky slope with a really happy feeling.

Phyllis and Peter met her at the back door. They were unnaturally clean and neat, and Phyllis had a red bow in her hair. There was only just time for Bobbie to make herself tidy and tie up her hair with a blue bow before a little bell rang.

"There!" said Phyllis, "that's to show the surprise is ready. Now you wait till the bell rings again and then you may come into the dining-room."

So Bobbie waited.

"Tinkle, tinkle," said the little bell, and Bobbie went into the dining-room, feeling rather shy. Directly she opened the door she found herself, as it seemed, in a new world of light and flowers and singing.

Mother and Peter and Phyllis were standing in a row at the end of the table. The shutters were shut and there were twelve candles on the table, one for each of Roberta's years. The table was covered with a sort of pattern of flowers, and at Roberta's place was a thick wreath of forget-me-nots and several most interesting little packages. And Mother and Phyllis and Peter were singing--to the first part of the tune of St.

Patrick's Day. Roberta knew that Mother had written the words on purpose for her birthday. It was a little way of Mother's on birthdays. It had begun on Bobbie's fourth birthday when Phyllis was a baby. Bobbie remembered learning the verses to say to Father 'for a surprise.' She wondered if Mother had remembered, too. The four-year-old verse had been:--

Daddy dear, I'm only four And I'd rather not be more.

Four's the nicest age to be, Two and two and one and three.

What I love is two and two, Mother, Peter, Phil, and you.

What you love is one and three, Mother, Peter, Phil, and me.

Give your little girl a kiss Because she learned and told you this.

The song the others were singing now went like this:--

Our darling Roberta, No sorrow shall hurt her If we can prevent it Her whole life long.

Her birthday's our fete day, We'll make it our great day, And give her our presents And sing her our song.

May pleasures attend her And may the Fates send her The happiest journey Along her life's way.

With skies bright above her And dear ones to love her!

Dear Bob! Many happy Returns of the day!

When they had finished singing they cried, "Three cheers for our Bobbie!" and gave them very loudly. Bobbie felt exactly as though she were going to cry--you know that odd feeling in the bridge of your nose and the p.r.i.c.king in your eyelids? But before she had time to begin they were all kissing and hugging her.

"Now," said Mother, "look at your presents."

They were very nice presents. There was a green and red needle-book that Phyllis had made herself in secret moments. There was a darling little silver brooch of Mother's shaped like a b.u.t.tercup, which Bobbie had known and loved for years, but which she had never, never thought would come to be her very own. There was also a pair of blue gla.s.s vases from Mrs. Viney. Roberta had seen and admired them in the village shop. And there were three birthday cards with pretty pictures and wishes.

Mother fitted the forget-me-not crown on Bobbie's brown head.

"And now look at the table," she said.

There was a cake on the table covered with white sugar, with 'Dear Bobbie' on it in pink sweets, and there were buns and jam; but the nicest thing was that the big table was almost covered with flowers--wallflowers were laid all round the tea-tray--there was a ring of forget-me-nots round each plate. The cake had a wreath of white lilac round it, and in the middle was something that looked like a pattern all done with single blooms of lilac or wallflower or laburnum.

"It's a map--a map of the railway!" cried Peter. "Look--those lilac lines are the metals--and there's the station done in brown wallflowers.

The laburnum is the train, and there are the signal-boxes, and the road up to here--and those fat red daisies are us three waving to the old gentleman--that's him, the pansy in the laburnum train."

"And there's 'Three Chimneys' done in the purple primroses," said Phyllis. "And that little tiny rose-bud is Mother looking out for us when we're late for tea. Peter invented it all, and we got all the flowers from the station. We thought you'd like it better."

"That's my present," said Peter, suddenly dumping down his adored steam-engine on the table in front of her. Its tender had been lined with fresh white paper, and was full of sweets.

"Oh, Peter!" cried Bobbie, quite overcome by this munificence, "not your own dear little engine that you're so fond of?"

"Oh, no," said Peter, very promptly, "not the engine. Only the sweets."

Bobbie couldn't help her face changing a little--not so much because she was disappointed at not getting the engine, as because she had thought it so very n.o.ble of Peter, and now she felt she had been silly to think it. Also she felt she must have seemed greedy to expect the engine as well as the sweets. So her face changed. Peter saw it. He hesitated a minute; then his face changed, too, and he said: "I mean not ALL the engine. I'll let you go halves if you like."

"You're a brick," cried Bobbie; "it's a splendid present." She said no more aloud, but to herself she said:--

"That was awfully jolly decent of Peter because I know he didn't mean to. Well, the broken half shall be my half of the engine, and I'll get it mended and give it back to Peter for his birthday."--"Yes, Mother dear, I should like to cut the cake," she added, and tea began.

It was a delightful birthday. After tea Mother played games with them--any game they liked--and of course their first choice was blindman's-buff, in the course of which Bobbie's forget-me-not wreath twisted itself crookedly over one of her ears and stayed there. Then, when it was near bed-time and time to calm down, Mother had a lovely new story to read to them.

"You won't sit up late working, will you, Mother?" Bobbie asked as they said good night.

And Mother said no, she wouldn't--she would only just write to Father and then go to bed.

But when Bobbie crept down later to bring up her presents--for she felt she really could not be separated from them all night--Mother was not writing, but leaning her head on her arms and her arms on the table. I think it was rather good of Bobbie to slip quietly away, saying over and over, "She doesn't want me to know she's unhappy, and I won't know; I won't know." But it made a sad end to the birthday.

The very next morning Bobbie began to watch her opportunity to get Peter's engine mended secretly. And the opportunity came the very next afternoon.

Mother went by train to the nearest town to do shopping. When she went there, she always went to the Post-office. Perhaps to post her letters to Father, for she never gave them to the children or Mrs. Viney to post, and she never went to the village herself. Peter and Phyllis went with her. Bobbie wanted an excuse not to go, but try as she would she couldn't think of a good one. And just when she felt that all was lost, her frock caught on a big nail by the kitchen door and there was a great criss-cross tear all along the front of the skirt. I a.s.sure you this was really an accident. So the others pitied her and went without her, for there was no time for her to change, because they were rather late already and had to hurry to the station to catch the train.

When they had gone, Bobbie put on her everyday frock, and went down to the railway. She did not go into the station, but she went along the line to the end of the platform where the engine is when the down train is alongside the platform--the place where there are a water tank and a long, limp, leather hose, like an elephant's trunk. She hid behind a bush on the other side of the railway. She had the toy engine done up in brown paper, and she waited patiently with it under her arm.

Then when the next train came in and stopped, Bobbie went across the metals of the up-line and stood beside the engine. She had never been so close to an engine before. It looked much larger and harder than she had expected, and it made her feel very small indeed, and, somehow, very soft--as if she could very, very easily be hurt rather badly.

"I know what silk-worms feel like now," said Bobbie to herself.

The engine-driver and fireman did not see her. They were leaning out on the other side, telling the Porter a tale about a dog and a leg of mutton.