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[Cal Horner]

Gentlemen, thank you for your rapid response to my query.

Trevor, 
I was afraid I was going to have to do as you suggest. I just wanted an
easier way.

Luis, 
Thanks for taking to time to do the math. The only thing that bothers me is
the word 'assume'. In the words of the famous detective Sherlock Holmes. 
Never assume anything Watson."

Richard,
The detail is almost overwhelming.

As to your upcoming trip to the antipodes, contact me off line and we'll
discuss it.

Cal