168 Photographic Printing Process, [no. 2, new series, 



A good method of washing is to take up a dishful of pictures 

 (8 or 10) and let them drain on apiece of plate glass slanted, for a 

 minute or two, then lay it flat and with a glass roller express the 

 liquid from the papers as well as you can, replacing the mass in 

 a dish of fresh water and let them separate of themselves which 

 they will do after some shakings of the dish. This should be done 

 after a few washings after fixing — and repeated once or twice — during 

 the changing of water which ought to be every quarter of an hour 

 for twelve hours or so. 



Memo. 



Throw down the Nitrate of Silver in the first washings— great 

 saving of the silver salt will result from this. 



The same economy can be practiced with regard to the toning 

 bath — by recovering the unused gold. 



I have found that 1 grain of Chloride of gold tones three pictures 

 14 X 12. 



It would be economical to make Chloride of gold for oneself — ■ 

 a half sovereign will give 86 grains of Chloride — and the cost will 

 be about 6 Rs. 



Put the half sovereign into a glass stoppered bottle and pour 

 upon it six drachms of Aqua Regia — made of 

 1 part nitric 



| aci< 



i acids, 



5 „ mureatic 



6 „ water. 



Let it dissolve gradually adding acid when necessary. When 

 dissolved dilute, and throw down the gold by protosulph. iron 

 (6 to 1 of gold)— 



Re- dissolve (after thorough washing) and evaporate on a water 

 bath. 



A convenient form of drying apparatus can be made by two 

 sticks 12 feet long 3 inches broad and 1 1 thick slanted against a 

 wall — long (according to the wishes of the Photographer) rods 

 squared and veneered with deal or other soft wood should haye their 



