Thanks to all for this helpful stuff. My confusion lay with the "water pipe" element, but when one Lactnetter pointed out that the water doesn't filter the tobacco or other elements, it just "cools" what's inhaled, I did go directly to the info on tobacco use that's extant, but for all the info you've made immediately available here, and put at my fingertips, plus Frank Nice's informative comment, again, I send you my thanks. Jackie Levine *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome