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Show Plants Grow in Darkness. While many plants close their petals or fold their leaves as darkness approaches, ap-proaches, the testimony of most scientists sci-entists is to the effect that none cease to grow. A series of experiments was recently made in the east with quick-growing quick-growing plants, such as asparagus, lettuce, let-tuce, radishes and the like, with a view of ascertaining whether the growth continues at night with as great rapidity as during the day. The result determined that, while the growth is continual with most plants, it is by no means so rapid during the dark hours as during the light. There are, however, many exceptions to this, not a few plants being nocturnal and growing more and faster during the night than in the daytime. These, however, are usually tropical, and their habitat is commonly in dense forests, where even during the daytime day-time no great amount of light is able to penetrate. |