Letter from Titus de Weydlich, Institut Electro-Technique Montefiore, Universite de Liege, to Charles Vernon Boys Weydlich would be grateful to have some information on how to fix the quartz filaments into electrical measuring devices. In particular, he asks for advice on the technique where suspensions use two fibres, the filament being bent in two over a hook. It has been tried at the Institut, but the filament always breaks. Endorsed: 'Answered 18 Jan'. 11 January 1893