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Kent Norstrom wrote-

George mentions that the 1780 issue of the Tables Requisite isn't scanned
into Googles. I believe that the edition should be 1781, which is available
on Googles. Further, my understanding is that there is no edition published
in the time span 1767 to 1781.

Kent is right, and I was careless, in stating 1780 without checking, when 
it should have been 1781.

However, I've taken another look at Google Books, which appears to confirm 
that the only full view it provides me of Maskelyne's Tables Requisite is 
of the 1802 edition, and the 1781 edition is available to me here as "book 
overview" only, which prevents it being read. Unless I'm misunderstanding 
something, which is all too possible.  My own access to the first edition 
of 1767 is via a (facsimile) print.

If Kent has better access to the 1781 ed. than I do, I wonder if it might 
be possible for him to look in and select for us the appropriate page or 
two that Frank was referring to. It would come somewhere in the examples of 
how to clear a lunar distance (perhaps by more than one method) and should 
be readily identifiable by its value of apparent lunar distance between 
centres of 108� 30' 08".

George.

contact George Huxtable, at  george@hux.me.uk
or at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. 

   

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