ONE of the strangest of Nature's productions is the Sensitive Plant. It almost seems to form a connecting link between the animal and the vegetable kingdom. Each part of the plant has the power to move independently of every other part. When a leaf is touched, it immediately folds up, as if recoiling from danger; if touched in just the right way, the leaf- stalk will move toward the main stem, but the leaves will remain open. The flower looks like a pink silken tassel, and this also, when hit with considerable force, will roll up; yet the plant will remain unmoved under a moderate shower.