Hyposulphite of soda............... ½ gr.
Water.............................. 4 oz.

There is only one print, which is of a brown color, and in every way
inferior to those toned with the first bath.

3.--Gold chloride...................... 1 gr.
Sulphocyanide of potassium......... 12 gr.
Hyposulphite of soda............... ½ gr.
Water.............................. 2 oz.

The prints toned by this bath are, in our opinion, the finest of the whole.
The tone is a purple of the most brilliant and pleasing shade.

4.--Gold chloride...................... 1 gr.
Sulphocyanide of potassium......... 20 gr.
Hyposulphite of soda............... 5 gr.
Water.............................. 2 oz.

There is only one print, but it is from the same negative as one of the No.
3 group. It is very inferior to that in No. 3, the color less pleasant, and
the appearance generally as if the details of the lights had been bleached
by the large quantity either of hypo or of sulphocyanide of potassium.

5.--Gold chloride...................... 1 gr.
Sulphocyanide of potassium......... 50 gr.
Hyposulphite of soda............... ½ gr.
Water.............................. 2 oz.

Opposite to this description of formula there are no prints, but the