I

SWEET-PEASE HAVE TO BE PUT DOWN PRETTY DEEP

IT was May and the apple-trees were in bloom. In the garden outside was the Chief Gardener, with Prue and Davy—one on each side—hoeing and digging and raking. The early plantings, like radishes and lettuce and pease, were already well along, but it was just time, now, for a second planting of these things, and for the first planting of such things as corn and beans, and most of the kinds of flowers.

Some sweet-pease, it is true, little Prue had planted earlier, one warm day in April, when the Chief Gardener had dug for her a trench along the fence, and she had put in the pease, one at a time, and just so far apart, so that they wouldn't crowd, she said, or get in each other's way. The trench was quite deep—most too deep, Prue thought, but then sweet-pease have to be put down pretty deep, and the soil dragged up to the vines as they grow, to give them strength. Now, she planted some sweet-williams, and pansies, and mignonettes, and alyssum, and had brought most of her pots from the house, and set the things in a little row by themselves, so that they might still be company as they had been through the long winter and late spring.

Davy, too, had made a fine garden, with six hills of sweet-corn, one hill of cantaloupes, a row of pease, a little row of onions, lettuce, and radishes, besides a very small row of sweet herbs, such as marjoram, fennel, and thyme. Each garden was fully eight feet square, which is really quite a good-sized garden, when you remember that it must be kept nicely tilled and perfectly clean of weeds.

"I think I will have a hill of cucumbers, too," said Davy. "I like cucumbers."

"But they won't do, near your cantaloupes," said the Chief Gardener. "You see, cucumbers and cantaloupes belong to the same family, and one of the most twining, friendly families I know of. Each member left to itself is very good in its way, and often ornamental, but let them run together ever so little and before you know it they begin to mix up and look like one another, and even have tastes alike. A cucumber-hill there, Davy, would spoil the taste of your cantaloupes, and the cucumbers would not be good either. It's the same way with watermelons, and citrons, and pumpkins, and all the rest of the gourds."

"Gourds!"

"Why, yes, they all belong to the Gourd family, and they will all look and taste like gourds if you give them a chance. It's really, of course, because the pollen of one blows into the bloom of the other, and the members of the Gourd family are so closely related that pollens blend and mix. Different kinds of corn will do the same thing. That is why we have our popcorn as far from our sweet corn as we can get it. There are other families that do not mix at all. We grow apples and plums and peaches and roses, side by side—even different kinds of each—and they never mix."

"But apples and plums and peaches are not roses, are they?" asked little Prue.

"Just as much as strawberries, and pears and quinces are," said the Chief Gardener.

The children looked at him rather puzzled.

"How about blackberries and raspberries?" asked the Chief Gardener. "Don't you think they look a little, a very little, like wild roses, only the flowers are smaller and white, instead of pink?"

"Why, yes, so they do!" nodded Davy.

"And doesn't the bloom of a blackberry look like the bloom of a plum, and a cherry, and a pear, and an apple, and all those things?"

"A good deal," said Prue, "and wild crab blossoms look just like little wild roses, and they smell so sweet, too."

"And the wild crab has thorns like a rose, only not so sharp," said Davy.

"And a rose has little apples after the bloom falls," said the Chief Gardener. "I have known children to eat rose apples, though I don't think they could be very good."

Davy had run down to the corner of the garden and came back now with something in his hand. It was a wild rose that grew by the hedge there; a pretty, single pink blossom. Then he stopped and picked a strawberry bloom, and one from the apple-tree that hung over the fence. These he brought over to the little bench where Prue and the Chief Gardener had sat down to rest.

The Chief Gardener took them and held them side by side.

"There, you will see they are all very much alike," he said.

The children looked at them. Then Prue ran across the lawn and came back with a little yellow bloom.

"Isn't this flower one of them, too?" she asked. "Some people call it wild strawberry, and some sink-field."

"That," said the Chief Gardener, "is cinque-foil. I suppose the name sink-field comes from that. It is French, and means five-leaved, but sink-field is not so bad a name either, for it often grows in moist places. Yes, that is a rose, too."

"Then buttercups must be roses," said Davy. "They look just like that."

"No, Davy, that is one place where our eyes must look sharp. Can you find a buttercup?"

"Oh, plenty," said Prue, and ran to bring them.

Then the Chief Gardener took a buttercup and an apple-bloom, and held them side by side. There was a difference, but not very great. Then he took his knife, and divided the blossoms in half.

"Now look again," he said, and he took a small magnifying-glass from his pocket and held it so that they could see. "The petals and the sepals (that make the corolla and the calyx, you know) are a good deal the same," he said, "but, you see, there are many more stamens in the buttercup, and then the seed pod or pods, which we call the pistils, are not at all alike. The buttercup has a lot of tiny pods or pistils inside the flower, while the apple-bloom has one round pod below the flower, and this forms the fruit. The buttercup does not make fruit. It belongs to the Crowfoot family, and is a cousin of the hepatica and of the larkspur, which you would not think from the shape of the larkspur's bloom. The Crowfoot family is not so beautiful nor so useful as the Rose family, which is, perhaps, the most useful family next to the Grass family, and certainly one of the most beautiful families in the world."

"I think the Rose family is nicer than the Grass family," said Prue.

"Oh, no," said Davy. "We couldn't do without wheat and corn, and we could do without fruit and flowers—that is, of course, if we had to," he added with a sigh.

"I couldn't," said little Prue. "I like flowers best, and jelly and jam to eat on my biscuits, and you like all those things, too, Davy, and shortcake, and berry pie."

"Of course! but how would you have biscuits and shortcake without wheat to make the flour of?"

The Chief Gardener smiled.

"We can't decide it," he said. "They go together. It is said that we shall not live on bread alone, and I don't think we could live altogether on fruit and flowers, though I believe some people try to do so. Jam and bread go together, and a shortcake must have both crust and fruit to be a real shortcake. Wheat fields and orchards march side by side, and taking these together we have peach pudding and apple tart."

Prue was looking out over her little garden where the smoothly patted rows of beds made her quite happy, just to see them.

"I've got four things that begin with sweet," she said. "Sweet-pease, sweet-williams, sweet-mignonette, and sweet-alyssum."

"And my little Sweetheart is the sweetest flower of all," said the Chief Gardener.

II

DIFFERENT FAMILIES OF ANTS HAVE DIFFERENT DROVES OF COWS

It seemed wonderful to the Chief Gardener how much the children had learned just from the little pots of their window-garden. He had let them begin these gardens merely as an amusement, at first, but during those long winter weeks while the plants were growing and being cared for daily, little by little, Prue and Davy had been learning the how and why. When the seeds began to come now, he had to tell them very little about the care of the plants.

It is true that Davy was a little too anxious to hoe his rows of pease and salad almost before they were out of the ground, and hoed up a few plants, while Prue wanted to water her garden when the bright sun was shining, which would have baked the ground and done more harm than good. But they both knew so much more than they had known a year ago, that the Chief Gardener was glad of those little window-gardens which were now gone.

"You see, I was remembering the worm that cut off one of my cornstalks," said Davy one morning when the Chief Gardener found him digging carefully around the tender shoots. "I found one, too, but he hadn't done any harm yet."

"I'm crumbling the hard dirt around my little plants," said Prue, "it's so sharp and cakey, and I pull out every little weed I see, so they won't have a chance to get big."

The Chief Gardener looked on approvingly. Then he walked over to his own rows and looked carefully at his pease, which were just now beginning to bloom. Then he got down and looked more closely. Then he called Davy and Prue. They left their work and came quickly.

"Look here," said the Chief Gardener, "I have a whole drove of cattle in my garden."

"Cattle!" said Davy.

"Oh, Papa's just fooling," said Prue.

"Why, no," said the Chief Gardener, "don't you see them. There is a whole drove of cows," and he pointed to some little green bug-like things that clustered on the tips of his pea-vines.

The children looked closely and then turned to him to explain.

"There are some ants there, too," said Davy. "They are crawling up and down."

"Yes," said the Chief Gardener. "They own the cows. The cows are those green things—aphides, they are called, and the ants milk them. Look very carefully now."

Prue and Davy watched and saw an ant go to one of the green insects and touch with its bill first one, and then the other, of two little horns that grew from the aphid's back. And then the ant went to another aphid, and did the same thing. Then they saw that tiny drops of fluid came from the ends of these tiny green horns.

"That," said the Chief Gardener, "is honeydew, or ant's milk. The ants are very fond of it, and wherever you find these aphides, you will find ants, milking them. In fact, I believe the ants keep these aphides during the winter in some of their houses, and drive them in the spring to tender green feeding-places like these pea-vines, so that the milk will be sweet and plentiful. I have heard that different families of ants have different droves of cows, and fight over them, too."

The children were very much interested in all this, and watched the ants run up and down the vines and milk their cows. Then the Chief Gardener said, "I'm sorry, but I'm afraid we'll have to get rid of these. They are very bad for young plants, and ants are, too. They suck the juice, and ruin them. I must give them a mixture."

He went into the basement and cut up a few ounces of whale-oil soap, and dissolved it in hot water. Then when it was cool and weakened, he sprinkled the pease with it. The next day all the cows were gone, and most of the ants. But about a week later, just after a shower, there they were again, and the Chief Gardener said that the ants must have driven up a new herd. So he had to sprinkle them again, and even once more before the end of the month; and while he was sprinkling, he sprinkled the little gardens, too, for whale-oil soap when it isn't used strong enough to hurt the young plants is a fine thing for little gardens, and big ones, too.

III

THERE ARE MANY WAYS OF PRODUCING SPECIES

There were a good many rains in May. The weeds grew and grew, and it was hard to keep them down when it was wet and warm, and the plants were still so small. Prue and Davy had to get down close and pull them out carefully with their fingers, and this left the little green rows so straight and trim, and the earth smelled so nice when the sun came out warm, after a shower, that the children grew happy in the work, and wanted to plant new things almost every day.

Around the house Prue had planted a border of nasturtiums on one side, and a border of marigolds on the other, and they were all coming up and looked as if they would grow into strong, fine plants. Davy had planted some hills of castor beans in the garden, because the Chief Gardener had said that they were good for the three Ms—moles, malaria, and mosquitoes. He was also attending very faithfully to a row of strawberries which the Chief Gardener had told him he might have for his own. The little boy was quite skillful with a hoe, and could take care of his vegetables almost as well as the Chief Gardener, so the Chief Gardener thought.

"You must not hoe your beans when the dew is on them, Davy," he said one morning. "The vines are tender and it causes them to rust or blight, but you may hoe most of the other things, and you may hoe around most of your vegetables as often as you want to. Loosening up the soil about young plants makes them grow. It gives the roots a chance to spread, and lets sun and air into the soil. You must be a little more careful with flowers, Prue, for they are usually more tender, and it is better to dig with an old knife or a small, weeding rake. You must thin out your plants, too. Keep pulling from between, as they grow larger, so that they stand farther and farther apart. Where plants grow too thickly they are small, and the flowers and vegetables poor. People sometimes try to raise more on a small piece of ground by having more plants on it, but it does not pay, for the plants do not produce as much as if there were only half as many on the same soil. Give everything plenty of room and air, and they will grow and thrive like children who have a good playground and plenty of wholesome food."

"Papa," said Prue, "you were talking the other day of the different kinds of one thing: what makes them?—the different kinds of roses, I mean, and pansies, and—"

"And peaches and apples," interrupted Davy, "I want to know that, too."

The Chief Gardener did not answer just at first. Then he said, "I am afraid that is a pretty big subject for little people. There are a good many ways of producing species of flowers, and some of them are not easy to understand. But I can tell you, perhaps, about the fruits now, and we will try to understand about some of the flowers another time.

"To begin with, the upper part and the lower parts of our fruit-trees are different. The root and a little of the lower stalk is from a seed, and upon this has been grafted or spliced with soft bands and wax, a bud from some choice kind of peach or apple or plum, or whatever the tree is to be, and this new bud grows and forms the tree. Sometimes a bud of the choice kind is merely inserted beneath the bark of another tree and grows and forms a new limb. By and by, when it bears fruit, the fruit will be of the kind that was on the choice tree, but the seed, though it looks just the same, may be altogether different. If a seed like that is planted, it may make a tree like the root part of the one from which it came, or it may make a tree like the upper part, or it may make something different from either one. No one can tell what that seed will bring. So fruit growers plant a great many such seeds each year, and once in a great while some new peach, or apple, or plum, or cherry, finer than anything ever grown before, comes from one of those seeds. Then every little limb of that tree is saved and grafted or spliced to a lot of sturdy little roots that have come from other seeds, and this new kind of fruit goes out all over the world and is grafted, and re-grafted, until there are trees everywhere of the new kind."

"And wouldn't I get those same fine peaches we had last year if I planted the seeds?" asked Davy.

"You might, Davy, but there are a hundred chances to one that you would get a very poor, small peach, which you would not care to eat."

Davy looked disappointed.

"Well," he said, "I might as well pull it up, then."

"Why, did you plant one, Davy?" asked the Chief Gardener.

"Yes, last summer. I didn't know then, and after I ate my peach I planted the seed over there in the corner, and now it's just coming up, and I was going to keep it for a surprise for you."

"That's too bad, Davy, but let it grow, anyway. Perhaps it will make some new and wonderful kind. Even if it doesn't, we can have the limbs grafted when it is larger."

"Oh, and can you have more than one kind on a tree?"

"Why, yes, I have seen as many as three or four kinds of apples on one tree."

"And peaches, and apples, and plums, and pears, all on one tree, too?" said Prue. "Why that would be a regular fairy tree!"

"We could hardly have that," laughed the Chief Gardener, "though I have heard of peaches, and nectarines, and plums being all on one tree, though I have never seen it. I don't think such things do very well."

They went over to look at Davy's little peach-tree, which was fresh and green and tender, and seemed to be growing nicely.

"It should have fruit on it in three years," said the Chief Gardener.

Davy and Prue did not look very happy at this. It seemed such a long time to wait.

"It will pass before you know it," the Chief Gardener smiled.

"I shall be as old as Nellie Taber," said little Prue, who had been counting on her fingers, "but Nellie will be older, too," she added with a sigh. "So I'm afraid I can't catch up with her."

The Chief Gardener led them over to another part of the garden, where there was a bunch of green leaves, like the leaves of a violet, but when they got down to look, they found that the flowers, instead of being all blue, were speckled and spotted with white.

"Oh, Papa, where did you get those funny violets?" asked Prue. "What makes them all speckly?"

"I think," said the Chief Gardener, "that this is one of Nature's mixtures. I found it in the Crescent Lake woods last spring, and brought it home. There may be others like it, but I have never seen them. So you see, Nature makes new kinds herself, sometimes. You know, don't you, that the pansies you love so much, Prue, are one kind of violet, cultivated until they are large and fine?"

"Why, no, are they violets? Are my pansies violets?"

"Yes, they are what is called the heartsease violets. They were a very small flower at first, and not so brightly colored. They will become small again if you let them run wild a year or two."

Prue was looking at the variegated violet in her hand.

"I should think there's a story about this," she said, nodding her busy, imaginative little head.

"Suppose you tell it to us, Prue," said the Chief Gardener.

"Well, I think it's this way," said Prue. "Once upon a time there was a little girl named Bessie. And she lived way off—way over by Crescent Lake—with an old witch-woman who was poor. And Bessie had to carry milk to sell, every day, because they had a cow, and Bessie couldn't drink the milk, because they had to sell it.

"And one day when Bessie was going with the milk through the woods, she stopped to pick some flowers, because she liked flowers, all kinds, and specially violets. And when she stooped over to pick the violets, a little of her milk spilled out of her pail, and it went on the violets, right on the blue flowers. And when Bessie saw them all spattered with the milk she says, 'Oh, how funny you look! I wish you'd stay that way all the time.' And there was a fairy heard her say that, and she liked Bessie because she was so good, so she made the violets stay just that way with the white spots on them, and Bessie went home, and one day when the old witch-woman died the fairy brought a prince on a white horse, and Bessie went away with him to be a princess, in a palace covered with gold and silver, and lived happy ever after."

The Chief Gardener looked down at the little girl beside him.

"Why, what an exciting story! Did you make it all just now?"

"Yes, just now. It just came of itself," said little Prue.

"And didn't Bessie want her violets?" asked Davy.

"She took some of them along with her in a basket, and planted them around her new palace."

"And the rest she left for us," said the Chief Gardener. "I know now what to call them. We shall call them Bessie's Violets."