Bark (botany) rope, used for example in the rigging of Viking age longships. Among the commercial products made from bark are cork, cinnamon, quinine (from the bark of Cinchona) and aspirin (from the bark of willow trees). The bark of some trees notably oak ("Quercus robur") is a source of tannic acid, which is used in tanning. Bark chips generated as a by-product of lumber production are often used in bark mulch in western North America. Bark is important to the horticultural industry since in shredded form it is used for plants that do not thrive in ordinary soil, such as epiphytes.
Parable of the Olive Tree the ground and nourished it. In time some new branches appeared, but the top of the tree began to perish. So the master of the vineyard instructed his servant to cut off the decayed branches, and replace them with grafts of wild olives. Meanwhile, natural branches of the tree were transplanted to other parts of the vineyard. In time the original tree, now with wild olive branches grafted onto it, grew to give good fruit. Those natural branches of the original tree that were transplanted into poor soil also grew to give good fruit. However, a natural branch of the