[Jewelry making - Article 00100] - Re: [Orchid] Old English

[Ian W. Wright]

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Hi Terry,

    Ok, you've convinced me ;o) 

    I also did a bit of searching on the net and, whilst the two
    definitions of 'isinglass' do appear to be interchangeable to some
    extent - and seem to be confused even on the same web sites sometimes
    - I did come across the following at
    http://www.coachbuilt.com/ter/terminology.htm ISINGLASS - typically a
    window made from thin sheets made of a material other than glass.
    Early isinglass was made from a transparent sheet of gelatin,
    processed from the inner lining of a Sturgeon's bladder. As it was
    flexible, it was perfect for the storm curtains and window on early
    touring cars. The term is now commonly used as any non-glass sheet
    material which passes light, such as mica, oiled paper, celluloid or
    plastic. Early isinglass of all varieties yellowed and scratched
    easily. 

    I can only assume that the fish bladder kind of isinglass was used
    on the basis that it is not easily soluble in cold water. It would be
    interesting to know how long these windows lasted if used in wet
    conditions regularly. 

    I also came across a reference to a 1930's Ford car with isinglass
    windows which seemed to indicate the fish bladder kind but I have
    distinct memories of and old car my uncle had when I was a child
    which had mica windows in its soft top. I got into real trouble for
    cracking one once and it went misty as some pieces sheared off!! 

Best Wishes
Ian

Ian W. Wright
Sheffield UK

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