Good reading: both Kevin McElhone and Todd Augsburger corrected a typing
error I made. The vulcanisation process of course was invented in
1839, not in 1939!
It's like playing the piano: sometimes a finger does land on the wrong
key. Sorry for that. Maybe Robbie can correct my posting, in order to
prevent future astonishments?
Jan Kijlstra
[ Sorry, Jan, I was very sleepy when I edited the Digest,
[ else I might have noticed the error. ;-) -- Robbie
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