NavList:

Peter, you wrote:

"Ten Pound Island Books (www.tenpound.com) has for sale in its current
catalog a set of longitude tables by one George Margetts of London, which I
don't believe I have heard of before."

 

I haven't either, but a google search turned up a few hits. Hong Kong University even has them available online but only to registered students and staff. Here's the full title listed there: "Margetts's longitude tables : for correcting the effect of parallax and refraction, on the observ'd distance taken between the moon and the sun, or a fixed star". It turns out that he was also a chronometer maker.

 

And:

"The list archive searcher returns no hits (but then, it also doesn't return any hits for "lunars", so I think it's on strike). "

 

In case anyone hasn't tried this... you can google specific sites. For example, if you want to search the list archives of Navigation-L for "lunars", go to google and type in "lunars site:i-DEADLINK-com". This will search everything on that site so you'll get some non-list hits (from the online version of Bowditch usually), but they're not a problem.