168 Photogrcqokic 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 th^ 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 Ks. 
Put the half sovereign into a glass stoppered bottle and pour 
upon it six drachms of Aqua Regia — made of 
1 part nitric 
acids. 
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| thick slanted against a 
wall — long (according to the wishes of the Photographer) rods 
squared and veneered with deal or other soft wood should have their 
