[alt-photo] Re: gold process

[Alberto Novo]

Christina, 

> There has to be a connection between Dalla Tana and Stellatelli somewhere, I bet...wouldn't you think?

I don't think so. Stellatelli was a chemist, experimenting for years how to 
work with toners and this without Internet. When toning locally, you have to 
avoid contaminations and reaction among the different toners just how a 
painter mixed his pigments (for example, never mix lead white with a 
sulphide) 

> ... you can be the one to discover (as I ask in the article) why Tektol works so well with the process and Dektol not as well. One has suggested a lack of hydroquinone.

 From what I have read, Textol is a cold tone developer. That is, the silver 
grains are larger compared to those obtained with a hydroquinone developer. 
I suppose that the silver plating would be due to the partial solution of 
the silver image from the smaller grains and its deposition to the larger 
ones.
I remember a very fine article on the plating process with many formulas in 
a issue of World Journal of Post-Factory Photography. 

Alberto
www.grupponamias.com
www.alternativephotography.com/articles/art102.html