Tree from the cinchona tree ("Cinchona") and was for a long time the remedy of choice for the treatment of malaria. Aspirin was synthesised to replace the sodium salicylate derived from the bark of willow trees ("Salix") which had unpleasant side effects. The anti-cancer drug Paclitaxel is derived from taxol, a substance found in the bark of the Pacific yew ("Taxus brevifolia"). Other tree based drugs come from the paw-paw ("Carica papaya"), the cassia ("Cassia spp."), the cocoa tree ("Theobroma cacao"), the tree of life ("Camptotheca acuminata") and the downy birch ("Betula pubescens"). The papery bark of the white birch tree
Bark at the Moon new remix of the album. This 2002 remixed version of the album was met with mixed reaction; many elements found in the original mix are not present in the remix, namely several lead guitar parts. In addition, the song "You're No Different" has an alternate ending (with the fade-out removed) and "Centre of Eternity" has an altered intro segment. This edition also included the bonus tracks "Spiders" and "One Up the 'B' Side", originally the B-side of the "Bark at the Moon" single. All lyrics and music by Ozzy Osbourne, Jake E. Lee, and Bob Daisley Bark at the Moon