#1 By: howtogeek, June 19th, 2013 13:39
#2 By: Shirl, June 20th, 2013 08:12
The only rock? What about meerschaum?
#3 By: Lady Fitzgerald, June 20th, 2013 08:43
Not all meerschaum floats. The meerschaum that does float isn't as buoyant as most pumice.
#4 By: Shirl, June 20th, 2013 09:07
I know not all meerschaum floats, the point is that pumice is not the only rock that floats.
#5 By: M Henri Day, June 20th, 2013 11:05
Not a particularly good idea to attach one's message to pumice if the intended recipient is any distance away - it quickly becomes waterlogged and then sinks....