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.
Bark at the Moon feature drummer Tommy Aldridge, who was a fixture of Osbourne's live band for several years in the early to mid-1980s. He was fired after the recording of the album and briefly replaced by Carmine Appice, but returned mid-tour after Appice was removed by the Osbournes. When asked why Aldridge was brought back, Osbourne told "Hit Parader" magazine in early 1984 "For health reasons. He (Appice) was making me sick." Nonetheless, Appice did appear in the popular music video for the "Bark at the Moon" single. "Bark at the Moon" was re-issued again in 2002, although this version was actually a