following is written: "These prints were completely destroyed, the
sulphocyanide of potassium (probably) dissolving off the gelatine."

6.--Gold chloride...................... 1 gr.
Sulphocyanide of potassium......... 20 gr.
Hypo............................... 5 gr.
Carbonate of soda.................. 10 gr.
Water.............................. 2 oz.

This it will be seen is the same as 4, but that the solution is rendered
alkaline with carbonate of soda. The result of the alkalinity certainly
appears to be good, the color is more pleasing than that produced by No. 4,
and there is less appearance of bleaching. It must be borne in mind in this
connection that the paper itself is strongly acid, and that, unless special
means be taken to prevent it, the toning bath is sure to be more or less
acid.

7.--Gold chloride...................... 1 gr.
Acetate of soda.................... 30 gr.
Water.............................. 2 oz.

The color of the prints toned by this bath is not exceedingly pleasing. It
is a brown tending to purple, but is not very pure or bright. The results
show, however, the possibility of toning the gelatino-chloro-citrate paper
with the ordinary acetate bath if it be only made concentrated enough.

8.--Gold chloride...................... 1 gr.
Carbonate of soda.................. 3 gr.
Water.............................. 2 oz.