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a time known to be sufficient. The plate is then carried to the 

 dark room and developed, fixed and washed, dried, coated with 

 a rubber solution and stript from the glass, being then floated 

 on to a thick sheet of plate glass with other negatives and put 

 into a printing frame with a pieve of sensitized zinc plate and 

 printed, after which it is taken to the coating room and a light 

 coating of etching ink is applied by means of a roller. This 

 coats the whole of the plate. The parts affected by the light, 

 the clear lines in the negative, are insoluble. The parts not 

 affected are soluble and when the plate is washed under the 

 faucet the soluble parts are washed away, leaving your drawing 

 reduced to scale on a background of bright zinc. The plate is 

 then dried and rosin is dusted on so as to strengthen the acid- 

 resisting etching ink. It is then given a light etch sufficient to 

 give a sharp line but of little depth. It is then further dusted 

 to protect the sides of the lines, heated so that the resin becomes 

 incorporated with the etching ink and etched until sufficient 

 depth is attained. It then goes to the router, who routs out all 

 the metal which is not wanted, and is ready for the blocker, 

 who mounts it on a type-high block of pear or apple wood, and 

 it is then ready for the press. 



With your wash drawing the method you use is distinctly 

 different. Your tones are secured by the depth of color applied 

 and you assure texture by the fidelity of your drawing. The 

 material used is Bristol board, India ink or sepia and your 

 first wash will be of the same value and density as the lightest 

 ])ortion of your drawing, putting in successive washes and 

 detail until the drawing is complete. We will now follow the 

 wash drawing in its course thru the engraver's hands, who, 

 to reproduce it, has to interpose a Levy screen at a known dis- 

 tance in front of his wet plate. These screens are ruled with 

 lines varying from 50 to 400 lines to the inch and ruled in 

 both directions. This when the negative is made you will 

 find has broken up your drawing into thousands of small dots 

 and the whole of the drawing is covered — not only the ])arts 

 you have drawn but the white background as well. This is 



