Chemical Genealogy Debates

This page discusses the questions that arose as the MSU Chemistry academic genealogy display and web pages were verified, corrected, updated, and/or expanded. The questions deal primarily with identifying the preceptor of an individual.

Several philosophies are guiding the work on the MSU Chemistry academic genealogy:

  1. To keep the display managable, only one preceptor is allowed for an individual.
  2. Only the highest earned degree is followed, regardless of its timing or whether the field of study is chemistry.
  3. Sabbatical, post-doctoral, and other instances of studying or working with a "mentor" or "great influence" are not generally considered.
  4. Documentation of the "evidence" is very important.

The second and third philosophies are, at times, difficult to reconcile with the goal of producing a chemical academic genealogy -- hence the need for study and discussion and compromise before making what are often difficult (and, perhaps, even not widely accepted) choices.

For graduate degrees earned in recent times there is usually little question as to the identity of one's preceptor. In a strict sense the preceptor is the chair of one's thesis committee, the research advisor, the major professor, the one guiding the student along the path to earning the PhD degree (all just different titles for one and the same individual). Further back in time, and in other situations and locations, the identity of the preceptor may not be clear and obvious. When differing opinions or conflicting evidence were encountered, discussion continued until a choice was made. The entries below detail the reasoning behind each choice. See the information gathered in the work area for the individual for all the data used to make the choice.

Note that references to several chemical genealogy sources available on the WWW were made in an attempt to find information apon which to make choices:

Note also that names within square brackets indicate those present or former MSU Chemistry faculty whose lineages depend on the choice.

This page will always be a work in progress. Please let us know of any errors, or additional opinions or evidence, by e-mailing us at: .


Adams, R.
 - McCarty (1969) had preceptor as H. A. Torrey
 - Mainz has preceptor as Torrey/Richards, explaining that Adams began his
     PhD research with Torrey, that Torrey died in 1910, and that Adams 
     completed this project with several other professors' advice.  He then
     did additional work with Richards to complete his thesis in 1912.

Baeyer, A.
   [Chang, Eick, Galloway, Herbst, Schuetz, Sousa, Wagner]
 - McCarty (1969) had preceptor as Kekule.
 - Mainz has preceptor as Bunsen/Kekule

Blaedel, W.
 - We (after McCarty) had preceptor as Leighton
 - Mainz has preceptor as Leighton/Ogg

Bretschneider, H.
 - We (after McCarty) had preceptor as R. F. Wegscheider
 - Mainz has preceptor as Spaeth, who was a student of R. F. Wegscheider
 - Bretschneider not on NDSU chart

Brodie, B.
   [Averill, Broderick, Coskran, Kanatzidis, Khan, Odom, Pinnavaia]
 - McCarty (1969) had preceptor as Bunsen
 - Mainz has preceptor as Liebig

Bucquet, J.
   [entire Rouelle line]
 - We has preceptor as Lavoisier (himself a student of Rouelle)
 - Mainz has preceptor as Rouelle
     Mainz includes a note "... first to teach Lavoisier's theories in France;
       collaborator with Lavoisier from 1777; ..." and "FOOTNOTE: While
       Lavoisier had no students per se, Bucquet and Lavoisier collaborated
       early in both their careers.  Lavoisier's ideas had a major impact on
       Bucquet and vice versa."

Chandler, C.
   [Gansow, Nicholson]
 - McCarty (1969) had preceptor as Wohler
 - Mainz has preceptor as Wohler/Rose
     Mainz includes a "FOOTNOTE: Chandler studied one year with Wohler in
       Gottingen and was Rose's personal assistant for one year in Berlin.  His
       dissertation was based on work done at both laboratories."

Comstock, W.
   [Herbst, Sousa]
 - McCarty (1969) had preceptor as Baeyer
 - Mainz has preceptor as Allen, O. D.
     Mainz includes a "FOOTNOTE: Comstock published papers on mineralogy from
       1879 -1881, but turned to organic chemistry as a result of working in
       Remsen's laboratory in 1881-1882 and in Baeyer's laboratory from

Conant, J.
 - McCarty (1969) had preceptor as Kohler
 - Mainz has preceptor as Kohler/Richards
     Mainz includes a "FOOTNOTE: Conant obtained a couble PhD thesis: two years
       at half-time with Kohler and one year at full-time with Richards."

Cooke, J. P.
   [Dye, Hart, Popov, Timnick]
 - McCarty (1969) had preceptor as Dumas
 - Mainz shows Cooke with no preceptor
     Mainz includes a "FOOTNOTE: Cooke attended Silliman's lectures at the age
       of 16, but received no formal education in chemistry.  Shortly after he
       received his AB degree from Harvard and was appointed Professor of
       Chemistry, Cooke travelled to Europe to buy chemicals and equipment, and
       attended lectures given by Dumas and Regnault while in Paris.  Although
       Cooke called Silliman 'my only instructor in chemistry', he felt he
       learned much of his chemical philosophy while in Europe."

Coulson, C. A. 
   [K Hunt, P Hunt]
 - We (after McCarty) had preceptor as Fowler
 - Mainz has preceptor as Lennard-Jones (himself a student of Fowler)

Doering, W.
 - We (after McCarty) had preceptor as Woodward
 - Gribble at Dartmouth has preceptor as Linstead
 - Mainz has preceptor as Linstead
 - NDSU has preceptor as Linstead
 - UMass has preceptor as Linstead
 - UConn has preceptor as Linstead
 - YorkU has preceptor as Woodward
 - NotreD has preceptor as Linstead
 - UTexas has preceptor as Linstead
 - E-mail from James E. Jackson on 4 June 2003:
     "... In the case of my academic grandfather, William von Eggers Doering,
     for whom the "debate" is whether he studied with Linstead or Woodward, it's
     pretty straightforward and the answer, as you correctly show, is Reginald
     Patrick Linstead. I know Doering reasonably well, and have personally
     attended a retrospective talk he gave on the occasion of his 80th birthday
     in which he referred to his Ph.D. advisor as Linstead. The book "The
     History of Organic Chemistry in the United States" by Tarbell and Tarbell
     also lists Doering's advisor as Linstead.
       The Woodward confusion apparently comes from the fact that "everyone"
     organic knows of Doering and Woodward's early work, a formal total
     synthesis of the natural product quinine (a dramatic tour de force at the
     time which, in fact, has come under fire in the last few years). I don't
     know if Doering published anything with Linstead, only that he was his
     student. The other modestly confusing thing is that Doering got his degree
     at Harvard, but Linstead's appointment was at Imperial College, whereas
     Woodward was at Harvard. I assume Linstead visited Harvard for a period,
     but have no formal confirmation of that. ..."

Dumas, J.
   [Dye, Enke, Hart, Popov, Timnick]
 - McCarty (1969) had preceptor as Thenard
 - Mainz has preceptor as LeRoyer/De La Rive
     Mainz includes a "FOOTNOTE: In Geneva, Dumas studied pharmacy in LeRoyer's
       laboratory and listened to chemistry lectures by De La Rive.  Although
       his chemical research during this period was apparently carried out
       independently, it was to De La Rive that Dumas turned for advice.  In
       1820, Dumas published researches on iodine and a remedy for goiter with
       LeRoyer.  From 1921 to 1923, Dumas collaborated with J. L. Prevost on a
       series of physiological investigations.  In 1923, Dumas went to Paris and
       shortly thereafter was named professor at the Athenaeum."

Egdell, Russell G 
Question: Was the preceptor Goodenough or Orchard?
 - Oxford U web page on EXAMINATIONS AND BOARDS (Univ. Gazette, 19.1.95, No.
     4350, Vol. 125) (at the URL includes:
     "GENERAL BOARD OF THE FACULTIES|With the approval of the General Board, the
     following appointments and reappointments have been made and titles
     conferred for the periods stated.|2 Reappointments|Physical Sciences|
     russell g. egdell, ma, d.phil., Fellow of Trinity. In Inorganic Chemistry."
 - SciFinder shows papers co-authored with John B. Goodenough (close to the
     initial 'John Godnoff'??) in 1983,1983,1984,1986 while about 30 other
     publications go back to 1976.  [Wonder if Egdell got his MA around 1976 and
     worked in research many years before earning his D Phil around 1986 --
     this would explain all the publications, including one sole-authored, in
     the earlier years.]
 - SciFinder also shows papers co-authored with Anthony F. Orchard 1977, 1978 (5),
     1979 (2), 1980 (3), 1981, 1982 -- 13 papers ending before the 4 papers with
     Goodenough appeared 1983 (2), 1984, 1986.  Some co-authors (M.D. Hill, for
     example) span both time periods.
 - E-mail from James W. Oliver on 05 Sep 2003 states: "I was looking at Simon's
     [Garrett] page, and this does not mesh with something that he had given to
     me.  That was: Russell G Edgell (Oxon) -> A.F. Orchard (Oxon) -> R.J.P.
     Williams -> H.I. Irvine."  [The last three entries indicate that Egdell's
     preceptor is not now known with confidence.]
 - TMS entry about Goodenough says in part: "John B. Goodenough ... Ph.D. in
        physics ... in ... 1952... After receiving his Ph.D., he served as group
        leader at the Massachusetts Institute of Technology's Lincoln Laboratory
        for 24 years. He was professor and head of the inorganic chemistry
        laboratory at the University of Oxford before assuming his current
        position in 1986."  [This indicates he was at Oxford about 1976-1986.]
Display: Russell G Egdell (____-____) (D Phil ____, Oxford)
         [preceptor: ]

Emeleus, Harry Julius
   [Averill, Broderick, Coskran, Kanatzidis, Odom, Pinnavaia]
question: preceptor? Baker or Stock or Moissan?
  discussion: Mainz's note "... obtaining his degree with Baker ...",
    our definition of preceptor, and our second and third philosophies -- all
    make it obvious that Baker is the one to be considered the preceptor.
  Choice: Baker as Emeleus' preceptor.
Display: Harry Julius Emeleus (1903-1993) (DSc 1929, London)
         [preceptor: Herbert Brereton Baker]

Erlenmeyer, E. Sr.
 - McCarty (1969) had preceptor as Fresenius
 - Mainz has preceptor as Will
     Mainz includes a "FOOTNOTE: Erlenmeyer studied at Giessen, where he was an
       assistant to Will, and then to Fresenius.  He had his own apothecary
       business for several years, but then finished his degree at Giessen in
       1850.  Erlenmeyer went to Heidelberg in 1855 where he studied with
       Kekule, becoming his first private student.  Kekule's views profoundly
       invluenced his view of chemistry."

Evans, W. V.
 - We (after McCarty) had preceptor as Nelson
 - Mainz has preceptor as Morgan
     Mainz includes a reference: "1. Research advisor confirmed by reference to
       the PhD thesis, Columbiana Library (23Aug93)."

Fittig, W.
   [Borhan, Brubaker, Draths, Frost, Gennick, Grubbs, Hamilton, Hoeschele,
   Jackson, Stille, Wulff]
 - McCarty (1969) had preceptor as Wohler
 - Mainz has preceptor as Limpricht

Franchimont, A.
   [Armstrong, Enke]
 - McCarty (1969) had preceptor as A. Wurtz
 - Mainz has preceptor as Mesch
     Mainz includes a "FOOTNOTE: After obtaining his PhD in Leiden, Franchimont
       became Kekule's private assistant in Bonn.  Franchimont's association
       with Kekule influenced his whole career."
 - NDSU has preceptor as Mesch, with secondary links to Kekule and Wurtz
 - UTexas has preceptor as Kekule

Gibson, George Ernest
   [Allison, Beck, Bernthal, Leroi, McCusker, Morrissey, Nazaroff]
question: preceptor? Abegg or Lummer or Brown?
  discussion: We can not locate any evidence now to justify chosing
    Brown nor have we found compelling evidence for Lummer.  Mainz' footnote
    "3. PhD Thesis (Breslau 1911) - confirmed thesis advisor." is conclusive.
  choice: Abegg as Gibson's preceptor
Display: George Ernest Gibson (1884-1959) (PhD 1911, Breslau)
         [preceptor: Richard Abegg]

Glockler, G.
   [Popov, Timnick]
 - McCarty (1969) had preceptor as G. N. Lewis
 - Mainz has preceptor as Olson

Gomberg, M.
   [Cohn, Maleczka]
 - McCarty (1969) had preceptor as V. Meyer
 - Mainz has preceptor as Prescott
     Mainz includes a note on Gomberg's page:
       "After Gomberg obtained his PhD under the toxicologist Prescott, he
       travelled to Heidelberg and studied with Meyer.  Gomberg attributed his
       conversion to organic chemistry to Meyer's influence."

Gray, H. B.
 - We (after McCarty) had preceptor as Basolo
 - Mainz has preceptor as Basolo/Pearson

Hartley, H. B.
 - We (after McCarty) had preceptor as W. Odling
 - Mainz has preceptor as Conroy
 - NDSU has preceptor as Conroy

Henderson, G. G.
 - McCarty (1969) had preceptor as J. Ferguson for degree DSc 1890, Glasgow
 - Mainz has preceptor as Dobbie for degree MA 1884, Glasgow
     Mainz includes a "FOOTNOTE: Henderson received his MA degree for
       mineralogical studies under Dobbie.  He then spent more than six months
       with Wislicenus in Leipzig learning organic chemistry, which became his
       life's interest."
 - Henderson not on NDSU chart
 - UTexas has preceptor as Wislicenus

Hlasiwetz, H. H.
 - We (after McCarty) had preceptor as Rochleder
 - Mainz has preceptor as Redtenbacher

Ibers, James Arthur
question: preceptor? Schomaker or Sturdivant?
  discussion: Schomaker was known as a professor at CalTech.  Sturdivant
    earned a PhD under Pauling (1930) and published 13 papers (1928-1952 and
    1968) (6 with Pauling, 3 sole authored) but the only paper published after
    1952 (2 years before Ibers' PhD) was a tribute to Pauling.  I am guessing
    that Sturdivant  had a 'research scientist' position (not professor) at
    CalTech and that he did work with several students, including Ibers.
  choice: Schomaker as Iber's preceptor.
Display: James Arthur Ibers (1930-____) (PhD 1954, CalTech)
         [preceptor: Verner Schomaker]

Jackson, C. L.
   [Reusch, Tepe]
 - McCarty (1969) had preceptor as R. Bunsen
 - Mainz has preceptor as Cooke (note mentions later studies with Hofmann)
 - NDSU has preceptor as Cooke
 - NotreD has preceptor as Cooke
 - UTexas has preceptor as Cooke

Kekule, F. A.
   [Chang, Dantus, Eick, Galloway, Herbst, Schuetz, Sousa, Wagner]
 - McCarty (1969) had preceptor as Liebig
 - Mainz has preceptor as Will

Langley, E. and Hirst, E. L.
 - are these just one person???
 - Langley and Hirst not on NDSU chart

Lennard-Jones, John Edward (1894-1954) (PhD 1924, Cambridge)
   [K Hunt, P Hunt]
 - We (after McCarty) had two preceptor lines: Fowler, Hardy, "Mathematics at
     Trinity College"; and Lamb, Maxwell, Hopkins, Sedgewick.
 - Mainz has 9 generations: Fowler, Hill, Fletcher, Langley, Foster, Sharpey,
     Barclay, Bell, Wood.
 - NDSU has 9 generations: Fowler, Hill, Fletcher, Langley, Foster, Sharpey,
     Barclay, Bell, Wood.
 - Mathematics has 3 generations: Fowler, Hill, Fletcher, (unknown).
     We now think our second line for Lennard-Jones is for his MA degree.
   Choice: Fowler as Lennard-Jones' preceptor.

Liebig, Justus von (1803-1873) (PhD 1822, Erlangen)  
   [Allison, Beck, Bernthal, Chang, Dantus, Eick, Farnum, Galloway, Herbst,
   Leroi, McCusker, Morrissey, Nazaroff, Rathke, Schuetz, Sousa, Tulinsky,
   Wagner, Watson]
 - McCarty (1969) had preceptor as Gay-Lussac
 - Mainz has preceptor as Kastner
     Mains includes a note on Liebig's page:
       "Liebig followed Kastner from Bonn to Erlangen on the promise that
       Kastner would teach him mineral analyses.  Later claiming that Kastner
       did not know much about the subject (and finding it prudent to leave
       Erlangen after instigating a student riot), Leibig went to Paris on
       funds arranged by Kastner to learn organic chemistry from Gay-Lussac.
       Kastner also arranged for Liebig to receive his PhD from Erlangen in
     Mains includes on Kastner's page:
       "... forgotten man in German chemistry."
 - NDSU has preceptor as Kastner, with a secondary link to Gay-Lussac
 - UMass has preceptor as Gay-Lussac
 - UConn has no preceptor listed
 - Yorku has preceptor as Wilhelm
 - NotreD has no preceptor listed
 - UTexas has preceptor as Gay-Lussac
   Choice: Kastner as Liebig's preceptor.  We found Mainz's evidence
     more compelling than to simply follow traditional lineages.  Our second
     and third philosophies and our definition of preceptor (see header text)
     also led us to Kastner.

Loring, Hubert Scott
 - Mainz does not include Loring
 - DisAbs shows: Loring, Hubert S|PhD|1934|U Illinois Urbana-Champaign|
     Chemistry, General|"The Isolation and Characterization of Mesocystine
     and a Study of its Chemistry and Metabolism"
 - NDSU does not include Loring
 - Notre dame does not include Loring
 - SciFinder shows: about 85 publications 1930-1966, with the first 9 co-authored
     with Vincent du Vigneaud 1930-1935.  Other co-authors of first 9 publications
     are: L.F. Audrieth(1); Ralph Dorfmann(2); Harold A. Crafts(3).  All the papers
     with du Vigneaud have titles that include "cystine" and one in 1933 has the
     same title as Loring's thesis.  Audrieth received PhD in 1926 from Cornell.
     Dorfman received PhD in 1937 from Chicago.  Craft(s) was not found in DisAbs.
 - UConn does not include Loring
 - U Illinois Library catalog shows: "Loring, Hubert Scott, 1908-   " for author
     of thesis.
 - U Illinois Library contacted by e-mail regarding clues in thesis about the
     identity of Loring's preceptor, and "JB" replied 28 Jul 2004:
       "I was able to look at a copy of the thesis, and there are two names
        associated with guiding Loring's research.  The front page of the thesis
        is a typed and signed form that verifies that loring has completed his
        thesis.  It is signed by William C. Rose on the line "in charge of thesis"
        and Roger Adams on the "Head of Department" line.  On the Acknowledgements
        page, Loring thanks Dr. Vincent du Vigneaud "for the direction of this
        research".  So I'm not certain if the preceptor would be considered Rose
        or Vigneaud."
 - UMass does not include Loring
 - YorkU does not include Loring
Question: Was Loring's preceptor Rose or du Vigneaud?
  Discussion: No publications were found with both Loring and Rose as authors.
     Ten publications were found 1930-1937 with both Loring and du Vigneaud as
     authors and with the titles all containing variants of "cystine", the subject
     of Loring's thesis.  This publication history, along with the Acknowledgement
     in Loring's thesis of du Vigneaud "for the direction of this research", both
     strongly indicate that du Vigneaud was Loring's preceptor.  du Vigneaud's
     biography from the Nobel web site states "... du Vigneaud joined the
     Physiological Chemical Staff at The University of Illinois under professor
     W. C. Rose and in 1932 he became Head of the Biochemistry Department at the
     George Washington University School of Medicine. ..."  As Loring's thesis is
     dated 1934 and was awarded by Illinois, du Vigneaud (then at GWU) no longer
     had standing at Illinois and someone else had to stand in as the "director"
     of Loring's PhD research.  Rose, having a history with du Vigneaud and having
     standing at Illinois, was that "stand in" person as far as signing the
     official forms for Loring's PhD without there being any indication that he
     had any research interaction with Loring.
  Choice: du Vigneaud as Loring's preceptor.
Display: Hubert Scott Loring (1908-____) (PhD 1934, Illinois)
         [preceptor: Vincent du Vigneaud]

Lucas, H. J.
 - We (after McCarty) had preceptor as J. Nef
 - Mainz has preceptor as McPherson (note says other possible advisor is Evans)
     and McPherson is in turn the student of J. Nef
 - Lucas not on NDSU chart

McCay, L. W.
   [Kissinger, Stone, Swain]
 - We (after McCarty) had preceptor as Winkler
 - Mainz has preceptor as Winkler/Weisbach
     Mainz includes a "FOOTNOTE: McCay studied in Germany for four years, first
       in Freiberg with Weisbach and Winkler, and later in Heidelberg with
       Bunsen.  He received the ScD from Princeton in 1883 after returning from
       Germany, for work done with Weisbach and Winkler.  He had a great
       admiration for Bunsen and always felt that it was with him that he
       acquired his training and great love for analysis." and a reference "1.
       Research advisors confirmed by acknowledgment page of McCay theses
       (information from Princeton Manuscript Library, 21Apr93)."

McPherson, W.
 - We (after McCarty) had preceptor as Nef
 - Mainz has preceptor as Weber
     Mainz includes a "FOOTNOTE: Sometime before 1895, McPherson did PhD
       research under the directioin of Weber at Ohio State and under the
       direction of Nef at Chicago.  McPherson's PhD degree from Chicago was
       awarded in 1899, after he had been named full professor and head of
       department at Ohio State.  (Although McPherson served as an assistant to
       Sidney Norton at Ohio State from 1892-1894, this appointment involved
       only teaching and no research duties.)"
 - DisAbs shows: McPherson, William\PhD\1895\Ohio State U\
      Chemistry, General\(title)\
 - DisAbs shows: McPherson, William\PhD\1899\U Chicago\
     Chemistry, General\(title)\

Morse, H. N.
   [Cukier, McCarty]
 - McCarty (1969) had preceptor as Wohler
 - Mainz has preceptor as Hubner
     Mainz includes a "FOOTNOTE: During Morse's time at Gottingen, Wohler was
       retired from active service.  The head of the Laboratory was Hubner, and
       it was with him that most of Morse's advanced chemical work was done."

Sabine, W. C. W.
 - We (after McCarty) had degrees as: DSc 1907, Brown
                      DS 1914, Harvard
     and preceptor as Trowbridge
 - Mainz has degree: MA (Physics) 1890, Harvard with Trowbridge

Schmidt, Carl (1822-1894) (PhD 1844, Gottingen)

   [Horne, Kinsinger, Melson, Posey, Rogers, Schwendeman, Smith]
 - McCarty (1969) had preceptor as J. Liebig
 - Mainz has preceptor as Liebig
 - NDSU has preceptor as Liebig
 - UMass has preceptor as Liebig
 - NotreD has preceptor as Liebig
 - UTexas has preceptor as Liebig
     YET recent MSU database had him as student of Wohler????
   Choice: Liebig as Schmidt's preceptor.  This was a simple correction
     of an error which somehow got into our database.

Seaborg, G. T.
 - We (after McCarty) had preceptor as W. Latimer
 - Mainz has preceptor as Gibson

Stromeyer, F.
   [Averill, Babcock, Broderick, Burow, Cohn, Coskran, Dutton, Hammer,
   Kanatzidis. Khan, Maleczka, McCracken, Nocera, Odom, Pinnavaia]
 - McCarty (1969) had preceptor as Vauquelin
 - Mainz has preceptor as Vauquelin/Gmelin, J. F.

Torrey, H. A.
 - McCarty (1969) had preceptor as C. L. Jackson
 - Mainz has preceptor as Jackson/Hill
     Mainz includes references for Jackson as preceptor, and for the connection
       to Hill.

Trowbridge, J.
 - We (after McCarty) had degree as DSc - Physics 1873 (no place nor preceptor)
 - Mainz has degree as SB (physics) 1865, Harvard and preceptor as Lovering
 - Trowbridge not on NDSU chart
 - UMass has degree as SB (physics) 1865, Harvard and preceptor as Lovering

Wheeler, H. L.
   [Herbst, Sousa]
 - McCarty (1969) had preceptor as Comstock
 - Mainz has preceptor as Wells
     Mainz includes a "FOOTNOTE: Wheeler's first two publications in 1890 were
       co-authored with W. J. Comstock, the organic professor at Yale.  In 1892
       and 1893, Wheeler published several papers with the analytical chemist
       Wells and the crystallographer S. L. Penfield, including his PhD thesis
       work.  Wells appears to be the principal mentor, with Penfield
       contributing largely independent crystallographic studies of the
       compounds Wheeler prepared.  Wheeler's later inidependent research in
       organic chemistry was clearly influenced by his studies with Comstock."

Wilkinson, Sir Geoffrey (1921-1996) (PhD 1946, Imperial College)
   [Averill, Broderick, Coskran, Kanatzidis, Odom, Pinnavaia]
 - McCarty (1969) had preceptor as Emeleus
 - Mainz has preceptor as Briscoe
 - NDSU has preceptor as Briscoe, with a secondary link to Emeleus
 - UMass has preceptor as Briscoe
 - UConn has no preceptor listed
 - YorkU has preceptor as Briscoe
 - UTexas has preceptor as Briscoe
     We have a letter from Wilkinson (to Thomas J. Pinnavaia, dated 7 December
     1967) which states, 
       "... As far as my own Ph.D. is concerned, the situation was slightly
       complicated because my formal supervisor was Professor of Inorganic
       Chemistry, my predecessor in this Department, Henry Vincent Aird Briscoe,
       but as far as I was concerned I saw him once in two years and my
       day-to-day supervisor de facto was Professor H.J. Emeleus. ..."
     Mainz includes a note on Wilkinson's page:
       "There was a war on in Europe in the 1940's, and Wilkiinson's advisor,
       Briscoe, was often away from the University of London engaged in war
       research.  Emeleus provided guidance to Wilkinson during much of the
       latter's PhD career."
   Choice: Emeleus as Wilkinson's preceptor.  This follows Wilkinson's
     declaration of who he was actually supervised by, and this is consistent
     with most aspects of our definition of preceptor. 

Willstatter, R. M.
 - McCarty (1969) had preceptor as Baeyer
 - Mainz has preceptor as Einhorn
 - UMass has preceptor as Einhorn
 - UConn has preceptor as Einhorn
 - YorkU has preceptor as Einhorn

Winkler, Clemens Alexander (1838-1904) (PhD 1864, Leipzig)
   [Kissinger, Stone, Swain]
 - We (after McCarty) had two preceptors: Bunsen, Scheerer
 - Mainz has preceptor as Scheerer
 - NotreD has preceptor as Scheerer
 - YorkU shows no preceptor for Winkler
   Choice: Scheerer as Winkler's preceptor.

Wohler, F.
   [Baker, Borhan, Brubaker, Cukier, Draths, Frost, Gansow, Gennick, Grubbs,
   Guile, Hamilton, Hoeschele, Huston, Jackson, Karabatsos, LeGoff, McCarty,
   Nicholson, Spees, Stille, Wulff]
 - McCarty (1969) had preceptor as Berzelius
 - Mainz has preceptor as Gmelin, L.
     Mainz includes a "FOOTNOTE: Wohler was a medical student at Heidelberg
     where Gmelin was the Professor of Chemistry.  Gmelin persuaded Wohler to
     study chemistry and sent him to Berzelius' laboratories to learn the
     subject in depth."

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