| Description | Erasmus Darwin's notes on the presence and behaviour of air bubbles in water. The notes consist of observations of bubbles in freshly drawn water, and of bubble formation whilst pouring a glass of beer; and comments on Dr Benjamin Thompson's experiment into immersing silk in water, Dr Ingenhouse's [Dr Jan Ingenhousz?] experiments with vegetable leaves, and Dr Franklin's experiments with a cut cork dipped in oil.
Darwin proposes an experiment using a metallic plate cut into the form of a longitudinal section of a glass, with an insulated tail which is to be supplied with electricity. A candle would be held above the plate to see if the air bubbles would emerge from the point of the metallic device, extinguishing the flame. |