A few days later her mother peeped in at the door.

"You seem very comfortable," she said; "but are you not coming out to-day?"

"No," said Kitty; "I don't feel very well. My shell feels far too tight."

"Ah! it is going to split," said her mother. "I can see it looks very thin. You are quite right to stay in. Don't show yourself till the new one is hard, or somebody will devour you."

Kitty stayed in her house, lying still and feeling very queer. By and by her shell split across the back, just beneath her shield. She pushed her head out through the slit. Then she slowly drew the rest of her body out, till she stood quite outside her old shell, shivering and cold, and a little afraid. Her old covering lay there, legs and feelers and shield and tail; even the skins of the eyes on their little stalks. She herself stood in a new shell, exactly the same in shape, but quite soft.

Afterwards Kitty became accustomed to these wonderful changes; for she grew so fast that she had to have a new shell eight times during the first year of her life, five times the second year, and once every year after that till she stopped growing. Each time she had to hide in her house till the new shell became hard enough to protect her; then she swam out again, hungrier and stronger than ever.

She has been living in her burrowed house for years, making it bigger as she herself grew bigger. She is there to-day. She is a mother-crayfish now, and carries her little ones under her tail until they, too, are big enough to keep house for themselves.

THE GARDEN PARTY

It was a lovely summer morning. Everybody in the garden was busy, for in the afternoon the flowers were to give their great garden-party. The bees and flies and moths and butterflies and little beetles were all invited.