Letter from Fred T [Frederick Thomas] Trouton, Caerleon, Killiney, Co Dublin, to [Joseph] Larmor Some time ago he wrote to the Assistant Secretary of the British Associationn to ask for permission to use the two diagrams illustrating notes on Ohm's Law in 1886, and seven reports. There has been no answer, perhaps because of press of work around the Glasgow meeting. He asks Larmor to make enquiries, and if they cannot get them, they had better be photographed. The experiment he carried out for [George Francis] Fitzgerald was to see if condenser plates moving edgeways through the aether experienced an impulse of being charged. He gives a plan of the experiment, with a small sketched diagram, and notes the result, that no effect was found. Trouton considers the energy level involved and the apparatus was found to be sensitive enough to detect one hundreth part of the expected amount. Annotated: 'No.1'. 12 September 1901