Fri My dear Francis, So glad to hear you are coming up I would be very glad if you and Odile could come to dinner on Sat but there are snags as you know. (a) To avoid exhausting Odile with shop could you come to the lab on Sat afternoon? And if you brought some nice young woman who has no interest in protein or nucleic acid (e.g. Patsy might like to take the risk) with you and Odile to dinner this might prevent our degenerating into shop. The best safeguard is a really attractive young woman and this is why Odile does not quite fit the boat one who is unattached or at least unaccompanied [END PAGE ONE] [BEGIN PAGE TWO] by her husband. Well so much for the evening. (b) about staying the night I would be positively delighted but am a bit disabled this weekend as I am in such a state of nervous exhaustion that I intend not waking up at all Sunday which with the geometry of my flat makes visitors rather awkward. (I know this sounds awfully mean) We have found apparently that d.n.a (nucleic acid) does an alpha beta keratin type of transition and are hot on the trail hot is the word and working till we drop. I can still stand up most of the time but cannot answer for what state I will be in on Saturday, but hope to recover a bit on Sunday. We have x rays, brief, u.v. deiboisan [?], and much properties evidence already but dont [sic] mention it yet to anyone please. We hope for e.m. and i.r. evidence too. love to Odile, down with science, M.