Tree tissue. It protects the trunk against the elements, disease, animal attack and fire. It is perforated by a large number of fine breathing pores called lenticels, through which oxygen diffuses. Bark is continually replaced by a living layer of cells called the cork cambium or phellogen. The London plane ("Platanus × acerifolia") periodically sheds its bark in large flakes. Similarly, the bark of the silver birch ("Betula pendula") peels off in strips. As the tree's girth expands, newer layers of bark are larger in circumference, and the older layers develop fissures in many species. In some trees such as the
The Rumble Strips The Rumble Strips The Rumble Strips are an English band from Tavistock, Devon. The band took their name from rumble strips, which are a series of small, continuous lines of bumps alongside a road designed to help prevent inattentive drivers straying off the road. Having known each other since childhood, a precise conception date for the band doesn't really exist. The 4-piece line-up of Charlie Waller, Henry Clark, Tom Gorbutt & Matt Wheeler was present from the first recordings until late 2006 when Sam Mansbridge joined to fill out the sound developed during the recording of 'Girls & Weather'. The