CHAPTER IX. 



PRINTING ON P.O. P. TONING THE COMBINED 

 BATH BROMIDE PRINTING DEVELOPMENT 

 PLATINUM PRINTING SPOTTING PRINTS 

 ALBUMS. 



Printing-out paper, popularly known as P.O. P., 

 does not show microscopic objects to the best ad- 

 vantage. It is extremely useful for taking trial 

 prints, however, which may be cast aside after the 

 printing quality of the negative is ascertained. It 

 is also in great favour with amateur photographers, 

 who consider it the easiest process; a few words, 

 therefore, about it will not be out of place. It is 

 never permanent, and, although volumes are written 

 about toning and fixing in separate processes, much 

 trouble will be saved by adopting a single solution 

 for both fixing and toning. The great advantage of 

 this paper is that the result can be seen and print- 

 ing stopped at the right moment. 



The paper is laid on the negative, glossy side of 

 paper in contact with film side of negative, and 

 placed in a printing frame for exposure to day- 

 light, though not to direct sunlight unless with very 

 dense negatives. The print should be slightly 

 darker than the finished print is intended to be, 

 owing to loss of colour in fixing. 



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