HT> I've been staring at this thing too long.  I reconstructed the
 HT> formula by putting it together in pieces and checking each
 HT> piece as I went.  I finally came up with the following, and it
 HT> DOES work!

glad to see that you got it before getting my initial reply...

 HT> Bulb"+459.4)^4.9283*(10^(23.2801-5287.32/("Wet
                            |
 HT> Bulb"+459.4)^4.9283*(10*(23.2801+(-5287.32/("Wet
                            ^
the difference is right here|

 HT> The only two differences I see are with the extra pair of
 HT> parenthesis, and they turn out to be redundant because when I
 HT> add them to the formula that does work, it makes no
 HT> difference.  So, where's the difference that matters?  Or am I
 HT> just losing my mind!?

nah, just can't see the leaves for looking at the trees ;)

)\/(ark