Wolfram Heumann Juli 26.1960 Braunschweig Humboldtstr.1. Bot.Inst.T.H. Germany Dear Joshua! Thank you very much for your reprints.I am very saieashieben in your ideas about exobiology. In german newspapers your sugestions are often referred. In the next time I will get reprints of my publications in the Naturwissenschaften and Archiv. ‘fiir Mikrobiologie and sendiyou a copye- Strain 745 seems to be most ‘convenient for genetical work in starformers. I observe regularly genetical exchange ana am trying to explore the mode of ‘exchange using haseelo morphologically “ana Gokeeibarry marked strains .- For autumn I have ey invitation to Zeiss in Oberkochen to prove the Casperson UV-microscope for starformers. Perhaps we get Some insight in exchange of genetical material during starformation.— Thank you very much for your letter to Frofessor Bogen concerning my Di- q atendozentur. I Ep hope all conditions are accomplished now and I get the new laboratory til end of this year. Barbara and the shilaren wee ‘three weeks on the Baltic Sea for vacation.I have picked mf upthem well and recreated last week. All good wishes to Esther and you from Barbaral With my best regards to Esther sincerely yours