Search:

Hmm. Did the same thing with Vodka once. The smell of rubbing alcohol did that to me for a long time.

Oh, sure. See? Right here it is. Just what he said.

http://www.clipartof.com/images/emoticons/xsmall2/1224_researching_smiley_finding_an_answer_in_a_book.gif

Canid - As far as I can determine, aspens, poplars and cottonwoods all contain varying levels of populin and salicin. Which makes sense to me since they are closely related to willows.

Snakeman - The inner bark or "bast" is what's used. It contains both the glycosides salicin and populin, which are aspirin like compounds. Both are metabolized in the body as salicylic acid and...

Just remember that this is aspirin so you should never give it to a child because of the potential for Reyes Syndrome.

Here you go, WE.

http://www.madsci.org/posts/archives/2000-01/949268193.Bt.1.jpg

Here's a good site on how to collect it:
...

Black Willow (Salix nigra) can also be used as a tea. Boil the bark for 10-15 minutes. Drink the tea to alleviate headaches.