Toward spring they often found a strange yellow powder on the ground under the wood.  At first they played with it, calling it flour, and made pies and cakes out of it.  But at last they began to wonder where the flour came from, and after watching and studying a long time this is what they found out.

But first I must tell you that all the time the three little girls were happy and busy in this beautiful place, they were not the only family there.  There were the robins’ children, whose mammas were trying to make them good and happy too.  There were the beetles’ children, the ants’ children, and families of toads, butterflies, and spiders.  And while the three little girls were playing with the sticks of wood, there lay, tucked snugly away inside of them, many families of children, warm and safe in their wooden home.

Now I want the smallest of you little children to hold up her hand.  How small it is compared with your body!  Now let us see the little finger on that hand,—­it is smaller still; and now look at the nail on that finger:  the brothers and sisters of one of these families were altogether about as large as that tiny nail.  Their mamma was a wasp, with light, gauzy wings and a strong body with a long sting on the end of it, about the length of a needle.  With this little sting or saw, as it really was, she had bored many holes in the wood when it was still a green tree, and at the bottom of each hole she had laid a tiny egg.  There it lay for a long time, all white and still, until one day it cracked open, and out came a funny little white grub, with six short white feet, and black jaws very strong and large for such a tiny thing.  This little creature had never had anything to eat, and as it was very hungry indeed, it fell to eating—­what do you think?  Wood—­ its own house!  You wouldn’t like a stick of wood for your breakfast, I know, but the wasp-mamma knew what her little grub-children would want, so she put them in just the right place; for they couldn’t have eaten anything else.  And the hungry little grubs ate and ate and ate as long as they could, pushing away from the hole the part they did not want, and this fell upon the ground as the strange yellow powder the children found in the wood-yard, every spring.

And so, while the little girls were placing away in the sunshine the little grubs were eating away in the wood, until at last, one day, they grew satisfied, and one after another went to sleep.  There they lay in their dark homes, fast asleep, through long weeks, while the snow was melting and the grass coming up, and the birds and bees beginning their summer work again; until one day these lazy little creatures, that had never done anything in their lives but eat and sleep, woke up and began to stretch themselves.  But what had happened to them?  Instead of the soft white bodies they had gone to sleep with, they now had black ones and four gauzy wings; while six slender legs had taken the place of the six short