PRINTING-OUT) PAPERS Wi, 
such satisfactory results as the others. The following are 
typical formulas: 
Chloride of gold lg LF Se 
Sodium acetate, or borax 30 g 250) er: 
or Sodium tungstate or 
phosphate 10¢ 77 gr. 
Boiling water | 1000 ccm 16 oz. 
Or: 
Borax i 20 g 154 gr. 
Sodium acetate 20 g 154 gr. 
Boiling water 1000 ccm 16 oz. 
Or: | 
Chloride of gold 0.25 ¢g PO2 ier: 
Chalk hig) 22 SA soy aso 
Chloride of lime 0.75 g 5.7 5/21 
Water 1000 ccm 16 oz. 
For this bath the printing must be carried much further than 
usual, and the prints should be merely washed in water for 5 
minutes prior to toning. Or: 
Chloride of gold 2¢g 15)gn: 
Sodium bicarbonate 30 g 230 gr. 
Water 1000 ccm 16 oz. 
This bath is very rapid in its action and gives blueish to 
violet-black tones, according to the depth of printing. An- 
other bath that gives very rich tones is: 
Chloride of gold 0.5¢ 3.8 gr. 
Sodium formate 60 g 460 er. 
Sodium carbonate 0.8¢ 6 gr. 
Water 1000 ccm 16 oz. 
The sulphocyanide bath gives better tones, as a rule, than 
the above. A normal formula is: 
Chloride of gold 0.25 g Zion: 
