men Du lod ikke nogen Antydning falde om Bestræbelser fra tyske Videnskabsmænds Side for at hindre en saadan Udvikling.

Det er rigtigt at Jensen under sine Besøg i Kbh i 1943 paa sine Rejser til Norge for at medvirke ved Forøgelsen af tungt Vands Fremstilling fremkom med Antydninger i saadan Retning, men paa Grund af hans eget Ærinde og de stadig voksende Rygter om nye tyske Vaaben maatte jeg nødvendigvis være meget skeptisk og yderst tilbageholdende i min stedse mere farlige Tilværelse. Det var først, da jeg nogle Maaneder senere for at undgaa umiddelbar forestaaende Arrestation af det tyske Politi, flygtede til Sverige og ankom til England at jeg hørte om, de store Forberedelser man der og i U.S.A,. havde iværksat og hvor vidt man var kommen. Spørgsmaalet om hvor langt man var naaet i Tyskland optog ikke alene Fysikerne, men især Rege-

but you gave no hint about efforts on the part of German scientists to prevent such a development.

It is true that, during his visits to Copenhagen in 1943 on his journeys to Norway to participate in the efforts to increase the production of heavy water, Jensen did make hints in such a direction, but because of his own mission and the constantly growing rumours of new German weapons, I necessarily had to be very sceptical and extremely cautious in my ever more dangerous existence. It was only a few months later when, in order to avoid imminent arrest by the German police, I escaped to Sweden and arrived in England that I heard about the great preparations that were under way there and in the USA and how far they had come. The question of how far Germany had come occupied not only the physicists but especially the govern-