[Jack Zupan]

Wayne,

I also looked up gasoline today in the Merck Index. It listed the boiling point range you state. I thought I was working from memory which is obviously faulty and also I was thinking about carbon numbers since I think a major fraction is in the C5 - C7 range. But I won't speculate any more, next time I'll look it up and then post. It's less trouble. Also you were right about the aromatics, there is quite a lot in gas, 20% and more. This actually surprises me but that is what my references said, though the fraction is coming down for environmental concerns. Sorry about misleading you yesterday.

Jack Z