26 STEREOSCOPIC PHOTOGRAPHY 



If your plate has received a good exposure, or 

 is over-exposed, take one part of No. 2, and two 

 or three parts of No. i, add an equal bulk of water. 

 This will give you negatives that will be bright, 

 full of detail, and of right density. With regard 

 to the length of development I like the old bit of 

 advice — "Go on developing until you see the 

 principal part of the image well out on the back of 

 the plate." 



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