MY DEAR LITTLE FRIENDS:--You can never guess how much I have enjoyed writing these stories of the night-time, and I must tell you how I first came to think of doing so. I once knew a girl--and she was not a very little girl, either,--who was afraid of the dark. And I have known three boys who were as brave as could be by daylight, but who would not run on an errand alone after the lamps were lighted. They never seemed to think what a beautiful, restful, growing time the night is for plants and animals, and even for themselves. I thought that if they knew more of what happens between sunset and sunrise they would love the night as well as I.