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    Lewis and Clark
    From: Bruce Stark
    Date: 2002 Jul 8, 12:33 EDT

    This is in response to Paul Middents' June 14th posting.
    There's a bit of drama behind that article in the Proceedings of the American
    Philosophical Society by Richard Preston. If you have back issues of the
    Navigation Foundation's Newsletter, start with issue 63 to see how it
    Preston had finished the article, sent it in, and had it accepted by the
    editor of The Proceedings. At that point he found, in correspondence with the
    Navigation Foundation, that one of the central ideas of his article for the
    Philosophical Society wouldn't wash: It would have been virtually impossible
    for Hassler to have been unaware of the use of calculated altitudes in
    clearing lunars. Preston discovered he'd been misled by incomplete documents.
    The way he handled it, without bitterness or recriminations, was beautiful.
    He barely had time to alter the article to downplay the part about calculated
    altitudes. But in private correspondence I, and probably many others,
    encouraged him to let his article be published whether or not it was
    technically unassailable in all details.
    Preston also wrote a number of articles and letters for the Navigator's
    Newsletter. My favorite is in Issue #68: "Artificial Horizons, Octants, and
    Back Observations as Used by Lewis and Clark." The drawings are excellent.
    Among other things they make it clear how the Captains got their latitude
    from noon altitudes when the angle between the sun and its refection in the
    artificial horizon was beyond the range of a sextant.
    In the last issue of the Newsletter, # 74, Mrs. Angela Preston reported the
    death of her husband. She said he had taught her to appreciate its contents,
    and continued the subscription in his memory.

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