A few Weeks ago I tryed the Talbot´s Calotype Process - and completely failed. I used paper for painting. Washing the paper in silver nitrate solution, then iodizing - everything was okay. But when I washed the paper with Talbot´s "Silver-gallo-nitrate" (I ve already used the recipe for toning prints), and the paper went totally black - all the silver chloride in the paper had been reduced. recipes: Bath one silver nitrate 6,5g Water to make 200ml bath two - iodizing potassium iodide 32,5g Water to make 600ml Silvergallonitrate Bath a silver nitrate 6,5g Water 60ml Acetic acid 60% 10ml bath b saturated solution [ acidum tannicum] - german "Tannin" - don´t know the english word for it- I hope you can help me.