Letter from Cly H Cardo, to Sir Henry Thomas Tizard, Foreign Secretary, Royal Society, Burlington House, W.1. In response to an enquiry about the Admiralty's plans for dealing with Marineobservatorium, Wilhelmshaven and the Deutsche Seewarte, Hamburg, Cardo notes that as the future of the German hydrographic services are under discussion in the Control Commission it is not possible to disclose any information on measures proposed. The Lord Commissioners are reported as sharing Tizard's anxieties about the continuation of the necessary German hydrographic studies. 30 November 1945