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    About a manuscript book
    From: George Huxtable
    Date: 2001 Jul 14, 1:10 PM

    The following interesting posting has recently appeared on the HASTRO
    History of Astronomy discussion group. I am relaying it to the Navigation-L
    list in case any member has information or comments to offer. If so, please
    communicate directly  with Trefor.Thomas{at}BTINTERNET.COM as I doubt whether
    he is a member of this list.
    
    All I can offer is that there is no such work listed in the extensive
    bibliography (300-odd items) in Cotter's "History of Nautical Astronomy".
    Nor is there any work with that title or any work on spherics by J.Jackson
    in the Bobleian Library catalogue. As it is a requirement that to obtain
    copyright a copy of any published work had to be sent to the Bodleian and
    certain other libraries, one can assume with some confidence that the book
    did not get as far as publication. One of many lost masterpieces,
    perhaps...
    
    George Huxtable
    
    ====================
    
    From-         Trefor Thomas 
    Subject:      Astronomy/Navigation
    To:           HASTRO-L{at}WVNVM.WVNET.EDU
    
    Hi! I have a query relating to a manuscript which I have in my possession.
    It is 528 pp, bound in fine leather, entitled "Spherics, Astronomy and
    Lunars". It is signed on the title page J.Jackson.  No date, but internal
    evidence suggests that it is around 1827 (English). All the examples in the
    many calculations, etc, come from that period, and it refers in a friendly
    manner to the late Dr. Maskelyne (d 1811). It is in fine copperplate script
    throughout, with over 150 text diagrams.  There is a long section on
    spherics, at what seems to be a high level of mathematical competence (I am
    a Historian but not a scientist!), another on astronomy, and a final
    section on astronomical problems, and in particular the application of
    various methods of obtaining position at sea.  It is not a practical
    handbook for seamen, but a theoretical analysis of methods.  I have been
    unable to trace any reference to the author,  but is is difficult to
    believe that anyone who could produce this is unknown to history. It reads
    like a fair copy of material for a book, but no such title can be found by
    me anyway. It is not pure astronomy, but astronomy applied to problems.
    Includes for example "A New and Simple Projection for Clearing the Lunar
    Distances from Parallax and Refraction".  I have produced an outline of
    headings which I could send to anyone interested.
    Any help in tracing the author - him or her - will be received with immense
    gratitude!
    Trefor Thomas
    
    =========================
    
    ------------------------------
    
    george---.u-net.com
    George Huxtable, 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    Tel. 01865 820222 or (int.) +44 1865 820222.
    ------------------------------
    

       
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