I suppose if I were Archimedes I'd have climbed back out and shouted "Eureka", but as far as I know Archimedes never made it to Italy, so it didn't occur to me...
well, Archimedes *was* italian. for some meaning of italian, at least. he was born in Syracuse (the one in Sicily, not the one in the state of NY obviously :-). he lived and studied in Egypt, but most of his life was spent in Syracuse. granted, Sicily at that time was more a Greek region than an Italian one as it is today, but well, geographically speaking, it is in Italy.
and of course, Venice was founded ~700 years after Archimedes death, so he really had no chance of falling into your same canal.
anyway, Larry, I hope the water wasn't too cold :-)
cheers, Aldo