| 204 / | HD | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
| 193 | DF | APPARATUS {5} |
| 194 | DF | .~ Electrolytic {11} |
| * | DD | .~.~ With movable electrode means {7} |
| 212 | DF | .~.~.~ Rotary {3} |
| 213 | ![]() | .~.~.~.~ Barrels and rotary receptacles {1} |
| 214 | DF | .~.~.~.~.~> Swinging or tilting receptacles |