The Dark Room: Developing and Printing 51 



right-hand side for changing the plates ; and the 

 Ions: shelf or table beneath the window on which 

 to do the developing. If a second shelf is placed 

 below this last one, on which to put the hypo tray, 

 it will materially lessen the chances of any of the 

 hypo spattering into the developer. Over the 

 window there should be a curtain of very dark 

 red cloth which may be raised to get all the light 

 necessary when using the ordinary plate, but which 

 can be lowered to give less light when the ortho- 

 chromatic plate is being developed, for this plate, 

 being sensitive to the red rays, must be exposed 

 to the light as little as possible. 



Many people who will read this book are 

 undoubtedly already adepts at developing and 

 printing, and so this chapter will be of little or no 

 use to them ; but to the beginner, who has never 

 done any work in photography, a few words of 

 advice in the manipulation of his plates, both in 

 development and printing, may not come amiss. 



In the first place, cleanliness is absolutely essen- 

 tial to good work in photography, and on this 

 point one cannot be too particular. The plate- 

 holders and camera should be kept free from 

 dust, and the plates should be dusted with a soft 

 camel's-hair brush both before placing them in 

 the holders and after taking them out, before 

 development. If this is not done, " pinholes " in 

 the negative are apt to be the result. These are 



