QUOTE(jo.clarinet @ Jul 2 2007, 05:28 AM)

See
here for an explanation - scroll down to the section on C16th note duration, and then onwards from there. A breve wasn't always the longest note - in fact it still isn't, because in some of the (currently printed) recorder music I play on Early Music courses there are occasionally 'longs' at the ends of sections.

That is fascinating - I had wondered if Breve actually came from some other root and was only coincidentally the same word as Short in Italian - finding out not only that Breve really is from the Italian for short, but
why (which was what I asked) makes me feel oddly happy! Thank you.