Re: Encyclopedias

Russell Cothren (rcothren@comp.uark.edu)
Wed, 5 Jul 1995 16:44:44 -0500 (CDT)

I read once that the old timers had to deal with different film
and glass plate speeds due to the gelatine. It seems that the animal's
food supply differed and this created speed differences in the films.
It seems strange to me even now.

RUSSELL
DONE

On Thu, 6 Jul 1995, Dan Shapiro wrote:

> David Soemarko wrote:
>
> ---
> Gelatine, jello, and some gum are basically the same thing, just differ
> in strength and purity. They came from animal bone and / or skin. Have
> you notice that when you make chicken stock by cooking chicken neck bone
> for a long time, the stock is kind of thick and form jell like jello
> after it is cold.
> ---
>
> Time for me to chime in... I have discovered that all manner of gelatine
> can be used to make passable (if you are not too particular) gelatine prints.
> Animal proteins (apologies to the vegetarians among us), vegetable proteins,
> and even some starches seem to work.
>
> My most impressive result was a clam-chowder print. In chemical terms it
> is a nice mix of all of the above.
>
> Dan Shapiro
>