On Sat, 2 Jan 1999 21:31:28 -0500 dave vanhorn writes: >Just the old method of a bucket of ice water, and a pot of boiling >water. The ice water should be well stirred. Since all the ice floats, the water near the bottom of the container can warm up a little. Boiling water tends to stir itself. Use distilled water in both cases. >As long as you're at sea level, it's pretty darned accurate. With the boiling water, if tenths of a degree are important, you should correct for the local atmospheric pressure. At the time of the experiment (since it varies with weather conditions), ask the nearest airport or weather station. I think the CRC chemistry handbooks have a table of the exact boiling point at different pressures. ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]