Colored Hygroscopes.
| I.— | Cobalt chloride | 1 part |
|---|---|---|
| Gelatin | 10 parts | |
| Water | 100 parts |
The normal coloring is pink; this color changes into violet in medium humid weather and into blue in very dry weather.
| II.— | Cupric chloride | 1 part |
|---|---|---|
| Gelatin | 10 parts | |
| Water | 100 parts |
The color is yellow in dry weather.
| III.— | Cobalt chloride | 1 part |
|---|---|---|
| Gelatin | 20 parts | |
| Nickel oxide | 75 parts | |
| Cupric chloride | 25 parts | |
| Water | 200 parts |
The color is green in dry weather.
HYOSCYAMUS, ANTIDOTE TO: See Atropine.
ICE:
See also Refrigeration.