"Another Wise Guy - Macon, GA USA" >
wrote:
> []My next step will be to introduce a flow of air into the tube to
> keep the smoke out.

And that will tell you the opacity of what? Your posts?

--
Nick, Retired in the San Fernando Valley www.boonchoo.com
"Giving violent criminals a government guarantee that their intended
victims are defenseless is bad public policy."
- John Ross, "Unintended Consequences"