Diagrams, experimental equipment and results by A [Arnulph] Mallock Five diagrams, labelled figures 1-2 and diagrams 1-3, showing equipment used in Mallock's investigation into the instability of India-rubber tubes and balloons when distended by fluid pressure and curves indicating the results of his experiments. Subject: Physics Prints of these diagrams were published in volume 49 of the Proceedings of the Royal Society alongside the paper 'Note on the instability of India-rubber tubes and balloons when distended by fluid pressure'. 1891