DRAFT OF A CLASSIFICATION FOR THE WOKLdV FAIR. 711 



773. Substitute Prucesses, (. e., Processes Partly Chemical, Partly Mechan- 



ical, Devised as SuusrrruTiis fuu the Oluer Hand Processes, 

 Reliel-etchiug. 

 Clay-surface processes. 

 Graphotype. 

 Wax processes. 



Methods iuvolviug the use of soft blocks. 

 Steuochromy. 

 Galvauography. 



Processes involving the use of mercury. 

 Processes iuvolviug the use of gelatiue surfaces. 

 Engraving by machinery. Relief. 

 Engraving by machinery. Intaglio (medal-ruling). 

 Nature-printing. 

 The Anastatic process. 



774, COLOR-PRIXTING. 



From relief blocks. 



From intaglio plates. 



From planographic surfaces. 



78. Photography. 



780. Hl'^tory and Principles ok Phdtoijraphy'. 



The Daguerreotype. 



781. Apparatus and Accessories. 



Cameras of all kinds. 

 Flasli apparatus, etc. 



782. Materials, Films, Negatives, Positives. 



The studio and its accessories. 



Silver prints, platinotypes, carbon jjvints, etc. 



783. Portrait Work. Compositions. 



784. Landscape and Architectural Work. 



785. Application oe Photography to the Arts and Sciences. 



Prints on wood, stuffs, enamels, etc. (For photomechanical processes of 

 engraving, see Division 79.) 



786. PHOTdCHRUMY. 



787. The Stereoscope. The Stereopticon. 



788. Enlargements (Solar and Electric) and Retouched Photographs, etc., 



IN Crayon, Water Color, by Air Brush, etc. 



789. Amateur PHOTociRAPHY and its Results. 



79. Photomechanical Processes. 



790. Processes Producing Reliee Blocks (Line-Work, Half-Tone). 



791. Processes Producing Intaglio Plates (Line-Wcnk, Half-Tone). 



792. Processes Producing Planographic Printing Surfaces, i. e., Photo- 



lithography AND Photo-zincography (Line- Work. Half-Tone). 



793. CoLLOGRAPiiic Processes. 



794. woodburytype. 



795. The Photo-mechanical Processes Applied to Color-printing. 



From relief lilocks. 

 From intaglio plates. 

 From planographic surfaces. 

 From coUographic films. 

 From Woodburytype molds. 



796. Dr.\wing for Process Work, including Aids Devised for this Kind of 



Drawing. (See 747.) 



