544 HANDBOOK OF PHOTOGRAPHY 



3. Prevention. — Properly prepared fixing bath made with fresh pure chemicals. 

 Swab print before washing, but after fixing. 



4. Remedy. — The deposit may sometimes be removed by soaking the print in water, 

 removing the white or milky deposit, and washing in fresh water, after which it is dried 

 in the usual manner. 



Stains, Discolorations, and Improper Tone Reproduction 

 Gray or Granular Appearance. 



1. Distinguishing Characteristic. — Gray or granular appearance of the print, 

 especially at the edges. 



2. Cause. — Among the causes may be listed: (a) use of old printing paper; (6) 

 underexposure and forced development, (c) printing paper kept in moist atmosphere, 

 (d) insufficient amount of potassium bromide in the developer, (e) light fog. 



3. Prevention. — When the true source of the gray or granular appearance is 

 determined, the preventive measures will suggest themselves. 



4. Remedy. — None. 



Gray or Lead-colored Print. 



1. Distinguishing Characteristic. — Gray or lead-colored instead of white high lights 

 in print. 



2. Cause.- — -(See Gray or Granular Appearance.) 



3. Prevention. — (See Gray or Granular Appearance.) 



4. Remedy. — (See Gray or Granular Appearance.) 



Green, Contrasty Prints. 



1. Distinguishing Characteristic. — Prints are too contrasty and have green appear- 

 ance. 



2. Cause. — (a) Overexposure and underdevelopment, (b) Excess bromide in 

 developer. 



3. Prevention. — (a) Correct exposure and correct development. (6) Properly 

 compounded developer, made from fresh pure chemicals. 



4. Remedy. — None; make new print. 



Purple Discoloration. 



1. Distinguishing Characteristic. — Print contains purple discoloration. 



2. Cause. — Improper fixing in which the developer is permitted to act on the 

 print during fixing. 



3. Prevention. — Immerse print quickly and entirely in fixing solution, agitating 

 it while in solution. Do not permit print to float on surface of fixing solution. 



4. Remedy. — Make new print. 



Tones in Print Are Muddy. 



1. Distinguishing Characteristic. — Prmts have muddy appearance. 



2. Cause. — Muddy tones in a print may be due to (a) overexposure and over- 

 development, (6) excess potassium bromide in developer, (c) exposure of printing 

 paper to dampness, {d) exposure of paper to chemcal fumes. 



3. Prevention. — When the real cause for the muddy tones has been determined, 

 the necessary preventive measures required will be self-evident. 



4. Remedy. — Make new print. 



