U of S | Mailing List Archive | alt-photo-process-l | Re: Demachy and red chalk

Re: Demachy and red chalk

Title: Demachy and red chalk
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." 
Christina Z. Anderson
----- Original Message -----
Sent: Friday, May 22, 2009 4:45 PM
Subject: Demachy and red chalk

Recent discussion of Michallet paper prompted me to get a facsimile copy of Maskell and Demachy’s “Photo-Aquatint” paper. They recommend a number of pigments for gum printing, Most of the colours/pigments they mention are familiar, but second on their list of the most suitable, after venetian red, comes red chalk. I looked this up on the Web, but only found such things as red chalk drawings by (e.g.) da Vinci.

Does anyone know anything about red chalk? Hilary Page doesn’t seem to mention it in her lists of proprietary watercolours, nor is it in Cornelissen’s catalogue of pigments.