Copy letter from Robert William Frederick Harrison, to Sir William White, Fellow of the Royal Society In reference to the exhibition of the gyroscopic apparatus, Harrison notes the desirability of showing the model ship afloat in addition to the steadying apparatus, so they will try to find space for it all. He assumes that White will arrange the setting up of the apparatus himself, and explains that this could be done the day before the Soiree if necessary. 12 June 1907