Almost all flowers sleep during the night. The marigold goes to bed with the sun, and with him rises weeping. Many plants are so sensitive that they close their leaves during the passage of a cloud. The dandelion opens at five or six in the morning, and shuts at nine in the evening. The goat's beard wakes at three in the morning, and shuts at five or six in the evening. The common daisy shuts up its blossom in the evening, and opens its " day's eye" to meet the early beams of the morning sun. The crocus, tulip, and many others, close their blossoms at different hours towards the evening. The ivy-leafed lettuce opens at eight in the morning, and closes forever at four in the afternoon. The night-flowering cereus turns night into day. It begins to expand its magnificent sweet-scented blossoms in the twilight; it is full-blown at midnight, and closes never to open again with the dawn of day. In a clover-field not a leaf opens till after sunrise. These are the observations of a celebrated English author, who has devoted much time to the study of plants, and often watched them during their quiet slumbers.

Those plants which seem to be awake all night, he styles "the bats and owls of the vegetable kingdom".