. Portrait . ur local stationery store should be able to supply youwith one and the cost is only $ Care should betaken to keep it well inked and be sure and make a goodimpression on the envelope. Either black or green inkwill do but do not use red as the number will hardly bediscernible in the darkroom. NUMBERING THE FILM Films are usually numbered by the aid of a pencil orsharp pointed instrument such as a needle set in a woodenhandle, but these methods are slow and mistakes can bemade in copying the number from the order or perforating machines are sometimes used inla
. Portrait . ur local stationery store should be able to supply youwith one and the cost is only $ Care should betaken to keep it well inked and be sure and make a goodimpression on the envelope. Either black or green inkwill do but do not use red as the number will hardly bediscernible in the darkroom. NUMBERING THE FILM Films are usually numbered by the aid of a pencil orsharp pointed instrument such as a needle set in a woodenhandle, but these methods are slow and mistakes can bemade in copying the number from the order or perforating machines are sometimes used inlarge finishing houses but that method is to some extent 2 Portrait slow as the machine must be altered for each film, andif the order numbers do not come consecutively it con-sumes considerable time. The numbering device that we recommend is illus-trated below and consists of a square box, inside of whichis a small ruby lamp and a 16 c. p. carbon filament lampwith a switch. The box should be wired so that when. Numbering Machine the white light is turned on the red light is off but it is notessential, the only point being the saving of current. In the top of the box is a slot about li x i inches insize. The box should be ventilated by boring a fewsmall holes or cutting slits in two sides, and covering thesewith two strips of wood placed at right angles to preventthe white light striking the film. The strips of woodshould be blackened on the inside. (See illustration.) 3 *P o v t rati,
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