| 1870 | Mr Dallas | Notes
                on Experiments by new Printing Process of Mr W H Davies | 
      
              | P Lothian | 
      
              | 1870 | John
                Nicol | On
                Carbon Printing | 
      
              | 1874 | W
                J Bashford | An
                unsuspected cause of spots on Carte-de-visite and Cabinet
                photographs | 
      
              | 
              1875-76 | Alex Mathieson  | Experiences
                in working Gelatino-bromide Emulsion | 
      
              | John M Turnbull | 
      
              | Mr
                Dobbie | 
      
              | 1876 | George
                Croughton | Enlarging
                and the Enlarging Process | 
      
              | 1876 | James
                G Tunny | Carbon
                Printing | 
      
              | 1876-77 | Rev
                H J Palmer | 
                
                A
                résumé of the Gelatine Process | 
      
              | 1877 | J
                Roger | The
                Platinotype Process | 
      
              | 1877-78 | Rev
                H J Palmer | A
                Résumé of the Gelatine Process | 
      
              | 1879 | W
                H Davies | On
                Failures in Carbon Printing |