Today , I heard about Mortensen first time. I googled him and reached some spectacular landscape and portrait prints. He noticed that he was using gelatin and 2 drops per oz formaldehyde mixture heated to 150 fahrenheit and nylon brushed on to paper and soft rolled.

What do you say about this ? Is that a emulsion ? What is the name of the process ? What steps I am missing ? I think he was adding water color also but I collected above from many pages from memory. It does require 2 hours water spray to develop also.

Can anyone write the correct whole recipe he uses for landscapes and portraits ?