When black hektograph ink is desired, instead of the methyl-violet use double the amount of negrosine.
White Ink.
An excellent white ink, which can be used with a pen for writing on colored cards or paper, may be made as follows:
| Flake white12 | drachms. |
| Mucilage of gum Arabic6 | drachms. |
If too thick add water; if too thin, more mucilage. Shake well while using.
Rubber Stamp Ink.
| Aniline (desired color) 1/2 | ounce. |
| Glycerine2 | ounces. |
Ribbon Ink.
FOR TYPE-WRITERS, DATING STAMPS, ETC.
| Aniline 1/2 | ounce. |
| Alcohol4 | ounces. |
| Glycerine7 | ounces. |
| Water4 | ounces. |