- Letter from Dr. David Pressman, The Sloan-Kettering Institute for Cancer Research, to LP RE: Sends a copy of the letter from Dr. Coca concerning the paper on Radioactive tracers. Adds that his progress on the current manuscript was slowed due to a family bout with the flu, but notes that he will send the drafts to LP in England. [Letters from LP to Pressman October 30, 1947, 12-05–47, copy of letter from Coca to Pressman October 30, 1947] [Filed under LP Correspondence: Box #309.7, file:(Pressman, David)]
- Letter from G. D. Meid, Business Manager, to LP. RE: Asks him to substitute the enclosed check with one payable to the Academy. [Filed under LP Science: National Academy of Sciences, 1945-1951: Box #14.019 Folder #19.2]
- Letter from George C. Griffeth, M.D., to LP RE: Asking LP if he would take be a guest speaker, presenting a subject of his own choosing at a week of intensive training in cardiac diseases at the University of Southern California, sponsored by the American College of Physicians. The sessions are to be held at the LA County General Hospital during the week of February 3, 1947. The Regional dinner is planned for February 7th at the Alexandria Hotel. [Filed under: LP Speeches, 1947s.1]
- Letter from George S. Avery, Jr., Survey of Biological Progress, to LP RE: Sends a list of the articles intended for the first volume of The Survey of Biological Progress, and asks LP to suggest other titles that my help round out the volume. States that due to extended deadlines, manuscripts will not come in until later. [Letters from LP to Dr. George S. Avery, Jr., November 6, 1947, November 4, 1949] [Filed under LP Correspondence: #376.12]
- Letter from LP to Dr. R. E. Rundle, Atomic Research Institute, Iowa State College. [Letters from Dr. R. E. Rundle to Lp November 14, 1947, to Dr. Fred Ewing December 30, 1947] [Filed under LP Correspondence: #336.12]
November 19, 1947
Dr. R. E. Rundle
Iowa State College
I have read your manuscript on "A New Interpretation of Interstitial Compounds" with much interest. It sounds very good to me, and I do not have many comments to make.
As to your suggestion that the two-thirds bonds formed by a light atom involve two sp hybrid orbitals and then the other two p orbitals, it seems to me that this may well be reasonable. I suppose that a two-thirds bond might well be best described from resulting from resonance between an sp bond and a pure p bond. Of course, the extent to which such a detailed description of a resonating structure has meaning is not very clear, and until further useful applications of the general idea have been made we cannot be sure that the idea is worth while.
On page 8, reference 7, the date of the second edition of my book is given as 1942. It should be 1940 - I think that the Cornell University Press may have changed the date line in some of its later printings, but there was no revision whatever after 1940, and 1940 is accordingly the right date.
Would it not be just as easy to combine Tables 1 and 2 into a single table? It would be more convenient for the reader, I think, who, when he referred to the table for a value of an interatomic distance, would immediately see the structure to which it refers.
You may not have noticed that the argument which you give beginning at the bottom of page 15 on the importance of the metal-metal bonds in determining structure is essentially the same argument that I used in my J.A.C.S. paper for explaining the assumption of the nickel arsenide structure by AuSn rather than the sodium chloride structure.
I agree completely with you that often the bond numbers calculated by the straightforward application of my rule to observed interatomic distances are too large in some cases. I have made a big
collection of crystal structures in which it is necessary to assume that only the strong bonds really have the bond numbers indicated by their distances, the somewhat longer distances being merely incidental to the bond structure. I may mention that in some of these crystals the interatomic distances that actually correspond to bonds are those between like atoms, and not those between unlike atoms, as in the cases discussed by you. Consequently, I think that it cannot be said as a rule the bonds are formed between unlike atoms.
I trust that you will continue with work in this field, and in particular also with experimental studies of these substances.
P.S. I have gathered together a large amount of material on the interpretation of reported crystal structures, some of which I hope to get published during the coming year. - L.P.
- Letter from Mary E. Ray, Secretary, Emergency Committee of Atomic Scientists, to Mr. and Mrs. H. Z. Llewellyn. Thanks them for their donation and support, and thanks them for telling their friends about the committee and its work. A recent article by Cord Meyer, which may be of interest to them, is enclosed. LP Peace: Box 3.005, Folder 5.3
- Letter from Robert A. Spurr, University of Hawaii, to LP RE: Discusses his work at Hawaii, including his dipole moment apparatus, papers, and visiting professors. Asks LP questions regarding quantum mechanics and compounds. States he would like to go to another university to learn about radioactive isotopes, perhaps on fellowship or an exchange. [Letter from LP to Dr. Robert A. Spurr November 26, 1947] [Filed under LP Correspondence: #367.9]
- Telegram from Miss A. Bradbury, Domestic Bursar, Balliol College, Oxford University to LP RE: “HOPE TO SEND DEFINITE NEWS ABOUT 14 BANBURY ROAD TOMORROW REGRET OTHER POSSIBILITIES HAVE FAILED LETTER FOLLOWING.” [Letter from Bradbury to LP November 10, 1947, telegram from Bradbury to LP November 20, 1947] [Filed under LP Correspondence: (Oxford University, [re: Eastman professorship and residency in Oxford] 1946-1948), #299.8]