1.   Tree bark provides deer with sustenance in periods of drought.

2.   A series of solarized pictures of tree bark curled up on a white surface look like brush strokes.

3.   A thick coating of ice would prevent birds from boring through tree bark to reach insects, or from reaching the seeds on plants.

4.   During mating season, from September to December, bucks mark their territories by rubbing off tree bark.

5.   Emerging from a stand of scrub pines into a clearing was a scrawny kid dirty as tree bark.

6.   However, drugs produced from naturally occurring substances, such as tree bark, soil and fungi have become a rich source of pharmaceuticals.

7.   It inspires the medicine makers who brew slivers of tree bark and bundles of dried leaves into elixirs sold in used Coca-Cola bottles.

8.   Leaner suits were covered by long coats of whimsical floral fabrics, or cavalier coats that looked made of tree bark.

9.   Scientists talk of Taxol, the potent breast cancer drug, found in yew tree bark during a random search of chemicals extracted from plants of the Pacific Northwest.

10.   Since time immemorial people have painted on cave walls, tree bark, house walls, paper, canvases.