in botany, the rind, or coarse outer bark, of plants. The organization of the outer and inner barks, which differ principally in the fineness of their texture, is particularly explained under the article PLANTS.

Wounds of the bark, and its separations from the wood, whether naturally or artificially made, are easily cured, and made to unite again by proper care. If sections be made in the rinds of the ash and sycamore of a square figure, three sides cut, and the fourth uncut, and the whole be afterwards bound round with a pack-thread, it will all unite again, only leaving a scar in each of the three sides where it was cut. If several parts of the bark of either of these trees be cut off, and entirely separated from the tree; some shallower, leaving a part of the bark on; and others deeper, to the wood itself; these pieces being again put into their places, and bound on with pack-thread, will not indeed unite, but a fresh bark will grow in their places, and thrust them away; but if they be first carefully laid on in the exact direction in which they originally grew, and then the whole part beyond the wound on every side covered with a large platter of diachylon, or the like, and this bound over with pack-thread to keep all firmly in their places, the pieces of bark, whether cut off shallower, or deep down to the very wood of the tree, will firmly unite themselves to the places where they originally grew. This cure will be performed in about three weeks: but the outer rind of the separated pieces will not be plump, but somewhat shrivelled; the edges also will recede somewhat from their original place; so that there remains a sort of scar all round. These experiments are best made in the spring season; for, in the autumn and winter, the sap arising but weakly, the parts that should unite wither before that is brought about. The success of these experiments has made some think that the whole branch of a tree separated and bound on again might unite with the rest. But the experiments that have been made in the most favourable manner for such a trial have all proved vain, the branch cut off withering always in a few days, however well united, and carefully kept on.

Cortex Peruvianus. See CINCHONA.

Cortex Winteranus. See WHITE CINNAMON.