... in the right hand, strike it against the left (the bag must be held some distance from the plate,) which will force the powdered resin to escape from the flannel bag, and falling on the hot plate, will there fix itself in small spots, something similar... The Art and Practice of Etching: With Directions for Other Methods of Light ... - Page 56 by Henry Thomas Alken - 1849 - 58 pages Full view -
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