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Red Chalk was also a color used by many of the early bromoilists for portraits and sometimes for landscapes. I have a tube of pre WWII Drem Company (Vienna) bromoil ink labeled "Red Chalk."
Cheers,
Gene Laughter
-----Original Message-----
From: ender100
Sent: May 22, 2009 9:14 PM
To: alt-photo-process-l@usask.ca
Subject: Re: Demachy and red chalk
Chris,
I think you are right. If I remember, the Red Chalk or Sanguine was a special chalk that had a lot of iron oxide in it.
Were the Demachy prints in this color gums or photogravures?
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Best Wishes,
Mark Nelson
On May 22, 2009, at 8:10:22 PM, "Christina Z. Anderson" <zphoto@montana.net> wrote:
Henry,
Try Venetian red, Indian red, or red ochre. It was a red iron oxide pigment if I remember correctly. One recipe calls for 3 g. Venetian red powder to 1/2 oz. gum. Another calls for a pigment called "light red" which I know was available about 10 yr ago anyway. But Venetian Red is a nice brick-y color that you'd be happy with. My notes say this: "For instance, a Venetian red or red ochre color was used to approximate the rust colored conte crayon portraits."
Chris
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"What is, is!"
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