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February
  • Manuscript: LP, "The Nature of the Chemical Bond." [LP Manuscripts of Article, 1931a.1]

February 1
  • AHP writes cheque to: City of Pasadena amount $2.83 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: City of Pasadena amount $3.52 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Connecticut Mutual Life Insurance Co. amount $11.56 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Connecticut Mutual Life Insurance Co. amount $9.43 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Encyclopedia Britannica, Inc. amount $16.30 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: General Contract Purchase Corporation amount $23.30 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Los Angeles Gas and Electric Company amount $2.69 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: May company amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Mr. William D. Crane amount $100 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: Southern California Telephone Co. amount $2.90 [Filed under LP Biographical: Box #4.011, Folder #2]

February 2
  • AHP writes cheque to: MacMarr Stores, Inc. amount $5 [Filed under LP Biographical: Box #4.011, Folder #2]
  • AHP writes cheque to: William Saylor amount $5 [Filed under LP Biographical: Box #4.011, Folder #2]

February 3

February 5
  • Letter from Dr. G. Jander to LP RE: Written in German. Thanks LP for the reprints he sent them. Gives his opinion on the formulations set up by Miolati, Copaux, and Rosenheim. States that even though he disagrees with the theory he believes it has contributed to this complex field of chemistry (high-molecular anions). Sends LP reprints of their publications on the systems of tungsten acids and molybdenum acids. Discusses their current research and opinions. [Filed under LP Personal Safe: Drawer 3, Folder 3.018.113]

February 6
  • AHP writes cheque to: F. C. Nash & Company amount $30 [Filed under LP Biographical: Box #4.011, Folder #2]

February 7

February 9

February 10
  • Peter Jeffress Pauling born

February 11

February 13

February 16
  • LP writes cheque to: Mrs. M. M. Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Letter from R.W. James to LP RE: James heard from Professor Bragg that LP has been asked to prepare Tables o F for the International Crystal Tables. This surprises James because he believes he and Brindley, who have already prepared Tables on F for elements up to the atomic number of 25, should have been asked to prepare the Tables. Explains that higher atomic numbers can be approximated using the Thomas-Fermi method. Also explains the data that he and Brindley have discovered and calculated and asks how LP calculates his data. [Letter from LP to James March 6, 1931] [Filed under LP Personal Safe: Drawer 3, Folder 3.018.112]

February 17
  • LP. The Nature of the Chemical Bond. Application of Results Obtained from the Quantum Mechanics and from a Theory of Paramagnetic Susceptibility to the Structure of Molecules. Journal of the American Chemical Society 53: 1367-1400. Received for publication February 17, 1931, published April 6, 1931. [Filed under LP Publications: Box 1931p, Folder 1931p.3]

February 18
  • Letter from John C. Slater, Massachusetts Institute of Technology Department of Physics, to LP, RE: Asks if LP would be able to come to MIT next year as a visiting professor and explains some of the details. [Filed under LP Personal Safe: Drawer 2, Folder 2.003.32]

February 20
  • LP writes cheque to: Pasadena Hospital Association amount $79.60

February 21
  • LP writes cheque to: Pashgian Brothers amount $25 [Filed under LP Biographical: Box #4.011, Folder #2]

February 24
  • LP writes cheque to: American Chemical Society amount $1.20 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP writes cheque to: Pasadena Hospital Association amount $47.95 [Filed under LP Biographical: Box #4.011, Folder #2]
  • LP writes cheque to: Sanitary Laundry amount $2.02 [Filed under LP Biographical: Box #4.011, Folder #2]

February 25
  • AHP writes cheque to: Mrs. M. M. Fillmore amount $10 [Filed under LP Biographical: Box #4.011, Folder #2]

February 26

February 27
  • Letter from R.M. Bozorth, Bell Telephone Laboratories, to LP, RE: Encloses prints of the photographs he has been working on, noting that he thinks the indices LP has assigned are wrong. Asks if LP has analyzed any other photographs and tell him to let him know if he gets any more results. [Letter from LP to Bozorth, March 16, 191931] [Filed under LP Personal Safe: Drawer 3, Folder 3.018.10b]

February 28
  • AHP writes cheque to: Herbold's amount $15 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Handwritten letter from E.C. Gilbert to LP, RE: Gilbert had presumed that LP knew about Doc Rowland, and proceeds to describe a scandal involving Rowland and the office assistant he hired. [Filed under LP Safe Contents: Drawer 3, Folder 3.018.82]
  • LP writes cheque to: MacMarr amount $15 [Filed under LP Biographical: Box #4.011, Folder #2]
  • Note from E.C. Gilbert, Oregon State Agricultural College, to LP RE: Explains to LP what happened to Doc Rowland, who was fired from O.A.C. due to his actions and is now hanging around M.I.T. but doing no lab work. Gilbert explains that the man replacing Doc is not cooperating and relates his frustrations with the lack of the chemistry department at O.A.C.. [Filed under LP Personal Safe: Drawer 3, Folder 3.018.82]