Record

Authorised form of nameMcLennan; Sir; John Cunningham (1867 - 1935)
SurnameMcLennan
ForenamesJohn Cunningham
Dates1867 - 1935
Dates and placesBirth:
Ingersoll, Ontario, Canada (14 April 1867)
Death:
Near Abbeville, France, on a train from Paris to London (09 October 1935)
ActivityResearch Field:
Physics
Education:
BA; PhD
Honours:
OBE 1917; KBE 1935
Royal Society activityMembership:
Fellow
Election Date:
6/05/1915
Medals/Prizes:
Royal Medal 1927
Lectures:
Bakerian 1928
Council:
VP 1933-1934
SourcesSources:
Bulloch's Roll; DNB; DSB vol 18 pp 586-587
Obituaries:
Obituary Notices of Fellows of the Royal Society 1932-1935 vol l pp 577-583, plate, by A S Eve
References:
R W Home, 'The Royal Society and the Empire: the colonial and Commonwealth Fellowship. Part 2. After 1847' in NR 2003 vol 57 pp 47-84
Virtual International Authority Filehttp://viaf.org/viaf/57394419
Royal Society codeNA1169
Archives associated with this Fellow
Reference numberTitleDate
IM/002895McLennan, Sir John Cunninghamnd
EC/1915/09McLennan, Sir John Cunningham: certificate of election to the Royal Society
IM/002894McLennan, Sir John CunninghamSeptember 1920
NLB/63/284Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Professor [John Cunnigham] McLennan, FRS03 August 1922
NLB/20/354Copy letter from Robert William Frederick Harrison, to John Cunningham McLennan, [Fellow of the Royal Society], The University, Toronto29 March 1900
RR/27/114Referee's report by William Henry Bragg, on a paper 'On the excitation of characteristic X-rays from light elements' by John Cunningham McLennan and M L ClarkSeptember 1922
NLB/51/752Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor John Cunningham McLennan FRS, c/o William Ramsay, Bowland, Stow, Midlothian17 June 1915
NLB/54/593Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS26 June 1917
NLB/53/339Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS, The Berners Hotel, Berners Street, W.17 July 1916
NLB/54/606Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Harrison & Sons2 July 1917
RR/19/84Referee's report by William Mitchinson Hicks, on a paper 'On the series lines in the arc spectrum of Mercury' by John Cunningham McLennannd [1912]
RR/22/81Referee's report by Joseph John Thomson, on a paper 'Ionisation potentials of mercury, cadmium, and zinc, and the single- and many-lined spectra of these elements' by John Cunningham McLennan and J P HendersonJune 1915
RR/26/94Referee's report by Alfred Fowler, on a paper 'On the refractive indices of mercury and thallium vapours' by John Cunningham McLennan11 July 1921
RR/25/26Referee's report by Alfred Fowler, on a paper 'Vacuum arc spectra of various elements in the extreme ultra-violet' by John Cunningham McLennan, D S Ainslie and D S Fullernd [1918]
RR/26/93Referee's report by Alfred Fowler, on a paper 'The spectrum of ionised potassium' by John Cunningham McLennan11 July 1921
RR/26/96Referee's report by Thomas Ralph Merton, on a paper 'On the structure of the Balmer series lines of hydrogen' by John Cunningham McLennan and P Lowe[July 1921]
RR/26/95Referee's report by Alfred Fowler, on a paper 'On the emission and absorption spectra of mercury' by John Cunningham McLennan and W W Shaver11 July 1921
NLB/64/468Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS19 April 1923
RR/27/112Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the fluorescence of aesculin' by John Cunningham McLennan and F M CaleAugust 1922
RR/27/111Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the absorption of wavelength = 5460.97 A. by luminous mercury vapour' by John Cunningham McLennan, D S Ainslie and F M CaleJuly 1922
RR/42/17Referee's report by John Cunningham McLennan, on a paper 'Intensity distribution in the band spectrum of helium (He2) for the region ? 6100 - 6500' by C W W ReadSeptember 1931
RR/29/75Referee's report by John Cunningham McLennan, on a paper 'The thermionic and photo-electric properties of the electro-positive metals' by A F A YoungJuly 1923
NLB/56/160Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS4 December 1918
NLB/68/306Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS16 June 1925
RR/32/40Referee's report by John Cunningham McLennan, on a paper 'The vacuum spark spectra of some the heavier elements, and series classification in the spectra of ionised atoms homologous with copper, silver, and gold' by J A CarrollJune 1925
NLB/60/642Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS8 March 1921
NLB/58/816Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS22 June 1920
NLB/66/664Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS16 June 1924
RR/32/97Referee's report by Alfred Fowler, on a paper 'On the series spectrum of gold' by John Cunningham McLennan and A B Mclay16 May 1925
NLB/59/230Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS29 July 1920
RR/34/62Referee's report by Owen Willans Richardson, on a paper 'The band spectra of helium and hydrogen at low temperatures' by John Cunningham McLennan, H Grayson Smith and C A Lea[October 1926]
RR/34/61Referee's report by Alfred Fowler, on a paper 'On the series spectra of palladium' by John Cunningham McLennan and H Grayson Smithnd [1926]
RR/36/10Referee's report by Alfred Fowler, on a paper 'The luminescence of solid nitrogen under cathode ray bombardment' by John Cunningham McLennan, H J C Ireton and K Thomson[June 1927]
RR/36/9Referee's report by Owen Willans Richardson, on a paper 'Intensities in the secondary spectrum of hydrogen at various temperatures' by John Cunningham McLennan, H Grayson Smith and W T Collins[July 1927]
NLB/59/237Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS30 July 1920
RR/37/107Referee's report by Frederick George Donnan, on a paper 'On the decomposition of ammonia by high-speed electrons' by John Cunningham McLennan and Gilbert GreenwoodJuly 1928
RR/40/59Referee's report by John Cunningham McLennan, on a paper 'The behaviour of water with change of temperature and with addition of electrolytes as studied by the Raman effect' by I. Ramakrishna Rao August 1930
RR/40/64Referee's report by John Cunningham McLennan, on a paper 'Absolute intensity of the aurora line in the night sky, and the number of atomic transitions required to maintain it' by Robert John Strutt, Lord Rayleigh1930
RR/37/108Referee's report by Alfred Fowler, on a paper 'The zeeman effect for the spectrum of tantalum' by John Cunningham McLennan and I A W DurnfordJuly 1928
RR/39/84Referee's report by Alfred Fowler, on a paper 'The spark spectrum of thallium, Tl III' by John Cunningham McLennan, A B McLay and M F Crawford10 June 1929
RR/43/106Referee's report by Owen Willans Richardson, on a paper 'The hyperfine structure of Tl II' by John Cunningham McLennan and M F CrawfordApril 1931
RR/52/103Referee's report by John Cunningham McLennan, on a paper 'The stark effect in the molecular spectrum of hydrogen' by Hawley SnellMay 1934
RR/37/106Referee's report by Alfred Fowler, on a paper 'On the luminescence of solid nitrogen under cathode ray bombardment' by John Cunningham McLennan, H J C Ireton and E W SamsonJuly 1928
RR/37/109Referee's report by Samuel Walter Johnson Smith, on a paper 'The magnetic susceptibility of single crystals of zinc and cadmium' by John Cunningham McLennan, Richard Ruedy and Elizabeth CohenSeptember 1928
RR/19/85Referee's report by William Mitchinson Hicks, on a paper 'On the constitution of the mercury green line ? = 5461 Å. U., and on the magnetic resolution its satellites by an echelon grating' by John Cunningham McLennan[May 1912]
RR/42/94Referee's report by Alfred Fowler, on a paper 'The fine-structure of some lines in the visible region of the spectrum of thallium III' by John Cunningham McLennan and Elizabeth J Allin10 July 1930
RR/54/74Referee's report by John Cunningham McLennan, on a paper 'Raman spectra of certain organo-metallic compounds' by N Gopala PaiJune 1934
RR/27/113Referee's report by Charles Glover Barkla, on a paper 'On the excitation of characteristic X-rays from light elements' by John Cunningham McLennan and M L ClarkJuly 1922
RR/42/97Referee's report by Alfred Fowler, on a paper 'On the spectroscopy of auroral green line radiation' by John Cunningham McLennan and H J C Ireton7 July 1930
RR/42/95Referee's report by Owen Willans Richardson, on a paper 'The hyperfine structure of some lines in the arc and first spectrum of indium' by John Cunningham McLennanAugust 1930
RR/50/98Second referee's report by John Cunningham McLennan, on a paper 'The first spark spectrum of gold. Au II' by Raghavendra B. V. RaoJanuary 1934
RR/43/61Referee's report by John Cunningham McLennan, on a paper 'Notes on the spectrum of gold' by William Mitchinson HicksMarch 1932
RR/14/195Referee's report by Oliver Joseph Lodge, on a paper 'Electrical conductivity in gases traversed by cathode rays' by John Cunningham McLennannd [March 1900]
RR/42/98Referee's report by Alfred Fowler, on a paper 'Spark spectra of bismuth, Bi II and Bi III. Evidence of hyperfine structure' by John Cunningham McLennan, A B McLay and M F Crawford September 1930
RR/14/193Referee's report by Arthur Schuster, on a paper 'Electrical conductivity in gases traversed by cathode rays' by John Cunningham McLennan14 January 1900
RR/14/194Referee's report by George Francis Fitzgerald, on a paper 'Electrical conductivity in gases traversed by cathode rays' by John Cunningham McLennan7 February 1900
RR/42/99Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'On the absorption of light by gaseous, liquid and solid xenon' by John Cunningham McLennan and R TurnbullJuly 1930
NLB/60/296Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS13 January 1921
RR/43/107Referee's report by Alfred Fowler, on a paper 'Arc spectrum of gold' by John Cunningham McLennan and A B McLaySeptember 1931
NLB/60/387Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS27 January 1921
RR/43/109Referee's report by Ralph Howard Fowler, on a paper 'Interpretation of hyperfine structure.—Discussion of H. F. S. in Tl II. Relative g (I) factors of Tl, Bi and Pb (207), and nuclear structure' by John Cunningham McLennan, A B McLay and M F CrawfordAugust 1931
RR/43/108Referee's report by Alfred Fowler, on a paper 'Spark spectrum of mercury, Hg II' by John Cunningham McLennan, A B McLay and M F CrawfordSeptember 1931
RR/48/48Referee's report by John Cunningham McLennan, on a paper 'The thermal expansion of quartz by x-ray measurements' by A H Jay[May 1933]
RR/48/42Referee's report by John Cunningham McLennan, on a paper 'On metallic dispersion in the near infra-red' by C Hurst[November 1933]
RR/45/112Referee's report by John Cunningham McLennan, on a paper 'The hyperfine structure of the lines of the arc spectrum of rubidium' by Derek Ainslie Jackson[December 1932]
RR/47/133Referee's report by John Cunningham McLennan, on a paper 'The nuclear spin of arsenic' by Samuel TolanskyMay 1932
RR/47/87Referee's report by John Cunningham McLennan, on a paper 'The stark effect for xenon' by H W Harkness and J F HeardSeptember 1932
RR/47/48Referee's report by John Cunningham McLennan, on a paper 'The effect of a transverse magnetic field on the refractive index of imperfectly mixed gases' by Clinton Coleridge Farr and C J BanwellApril 1932
NLB/60/712Copy letter from William Bate Hardy, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS18 March 1921
RR/50/99Referee's report by John Cunningham McLennan, on a paper 'The first spark spectrum of gold. Au II' by Raghavendra B. V. RaoMay 1933
RR/46/110Referee's report by John Cunningham McLennan, on a paper 'A new apparatus for rapid spectrophotometry of liquids in the ultra-violet region' by Frank Twyman[July 1932]
RR/48/120Referee's report by Piotr Leonidovich Kapitza, on a paper 'The phenomena of superconductivity with alternating currents of high frequency' by John Cunningham McLennan, A C Burton, A Pitt and J O Wilhelm[February 1932]
RR/48/121Referee's report by Alfred Fowler, on a paper 'Further experiments on superconductivity with alternating currents of high frequency' by John Cunningham McLennan, A C Burton, A Pitt and J O Wilhelm[September 1932]
RR/48/131Referee's report by John Cunningham McLennan, on a paper 'The influence of pressure on the dielectric constant of carbon dioxide up to 1000 atmospheres between 25° and 150° C' by A Michels and C Michels[August 1932]
RR/48/31Referee's report by John Cunningham McLennan, on a paper 'The change in the absorption spectrum of cobalt chloride in aqueous solution with increasing concentration of hydrochloric acid' by Owen Rhys Howell and Albert Jackson[July 1933]
RR/48/49Referee's report by John Cunningham McLennan, on a paper 'The thermal expansion of bismuth by X-ray measurements' by A H Jay[September 1933]
NLB/57/435Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to unknown correspondent7 November 1919
RR/47/117Referee's report by John Cunningham McLennan, on a paper 'On the hyperfine structure of certain Hg I lines in the electrodeless discharge' by T S Subbaraya and T G Srinivasa IyengarApril 1932
RR/49/86Referee's report by John Cunningham McLennan, on a paper 'Rotational anaylsis of the absorption bands of IC1' by William Edward Curtis and J Patkowski[August 1933]
RR/51/30Referee's report by John Cunningham McLennan, on a paper 'The physical basis of the biological effects of high voltage radiations' by William Valentine Mayneord[June 1934]
RR/50/54Referee's report by Alfred Fowler, on a paper 'The ultraviolet absorption bands of xenon' by John Cunningham McLennan and R TurnbullJanuary 1933
RR/51/25Referee's report by John Cunningham McLennan, on a paper 'The exchange of energy between a platinum surface and gas molecules' by W B Mann[June 1934]
RR/50/105Referee's report by John Cunningham McLennan, on a paper 'The first spark spectrum of silver Ag II' by B U R RaoJuly 1934
RR/36/11Referee's report by Alfred Fowler, on a paper 'On the wave-length of the green auroral line in the oxygen spectrum' by John Cunningham McLennan and J H McLeodnd [1927]
RR/51/42Referee's report by John Cunningham McLennan, on a paper 'Raman effect and temperature I—Ammonium chloride, bromide, iodide' by A C Menzies and H R Mills[October 1934]
RR/51/60Referee's report by John Cunningham McLennan, on a paper 'On the absorption spectra of the sulphides of zinc, cadmium, and mercury from ? 7000-1900, and the heat of dissociation of sulphur' by P K Sen-gupta[August 1933]
RR/52/20Referee's report by John Cunningham McLennan, on a paper 'Investigations of Raman spectra Part I—The Raman spectra of sulphuric, nitric, and nitrosylsulphuric acids' by William Rogie Angus and Alan H LeckieDecember 1934
RR/53/146Referee's report by John Cunningham McLennan, on a paper 'The liquefaction of helium by an adiabatic method' by Piotr Leonidovich Kapitza[September 1934]
RR/55/86Referee's report by John Cunningham McLennan, on a paper 'Ultra-violet absorption of ice' by E J CasselAugust 1935
RR/53/16Referee's report by John Cunningham McLennan, on a paper 'Investigations on magne-crystallic action III—Further studies on organic crystals' by Kariamanikkam Srinivasa Krishnan and S Banerjee[October 1934]
RR/36/12Referee's report by Samuel Walter Johnson Smith, on a paper 'The magnetic susceptibility of the alkali metals' by John Cunningham McLennan, Richard Ruedy and Elizabeth Cohen[August 1927]
RR/54/17Referee's report by John Cunningham McLennan, on a paper 'Investigations on magne-crystallic action IV Magnetic behaviour of paramagnetic ions in the s-state in crystals' by Kariamanikkam Srinivasa Krishnan and S BanerjeeSeptember 1935
RR/53/139Referee's report by John Cunningham McLennan, on a paper 'The magnetic moment of the nucleus of caesium' by Derek Ainslie Jackson[July 1934]
RR/53/156Referee's report by John Cunningham McLennan, on a paper 'Experiments at very low temperatures obtained by the magnetic method I—The production of the low temperatures' by Nicholas Kurti and F Simon[November 1934]
NLB/63/319Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS, c/o The High Commissioner for Canada, Victoria Street, S.W.1.18 August 1922
RR/56/1Referee's report by John Cunningham McLennan, on a paper 'Investigations of raman spectra II—The raman spectra of perchloric acid and nitrosyl perchlorate' by William Rogie Angus and Alan H Leckie[March 1935]
RR/55/59Referee's report by John Cunningham McLennan, on a paper ['The absorption of light in cæsium vapour in the presence of helium'] by H J J Braddick and Robert William DitchburnMarch 1935
RR/56/69Referee's report by John Cunningham McLennan, on a paper 'The standardization of photo-electric cells for the measurement of visible light' by H H Poole and William Ringrose Gelston Atkins[March 1935]
RR/56/71Referee's report by John Cunningham McLennan, on a paper 'Characteristics of the adsorption of indium and thallium atoms on tungsten oxide' by Cecil Frank Powell and R L Mercer[February 1935]
RR/56/82Referee's report by John Cunningham McLennan, on a paper 'The action of X-rays on certain bacteria' by A T Pugsley, T H Oddie and C E Eddy19 March 1935
RR/56/74Referee's report by John Cunningham McLennan, on a paper 'Fluorescent emission of the mercury line 2537 A at pressures between 10-3 and 10-1 mm' by Peter Pringsheim and O D Saltmarsh[August 1935]
NLB/57/818Copy letter from Sir James Hopwood Jeans, FRS, Secretary of the Royal Society; to Sir Dugald Clerk KBE, FRS13 February 1920
NLB/64/253Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS; Hotel Mont Fleuri, Mentone1 March 1923
NLB/64/197Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS22 February 1923
NLB/64/333Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS15 March 1923
NLB/63/61Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS20 June 1922
NLB/68/303Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS16 June 1925
NLB/65/780Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Thomas Ralph] Merton, FRS21 December 1923
RR/42/96Referee's report by Alfred Fowler, on a paper 'Zeeman effects for fine structure components of thallium spectral lines' by John Cunningham McLennan and A M I A W Durnford10 July 1930
RR/39/85Referee's report by Owen Willans Richardson, on a paper 'The spark spectrum of thallium, Tl II.—Term analysis.—Fine structure of lines' by John Cunningham McLennan, A B McLay and M F Crawford[September 1929]
RR/39/86Referee's report by Robert Robinson, on a paper 'The action of high speed cathode rays on acetylene' by John Cunningham McLennan, M W Perrin and H J C Ireton[June 1929]
NLB/64/845Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [John Cunningham] McLennan, FRS28 June 1923
NLB/65/647Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Alfred] Fowler, FRS3 December 1923
NLB/65/650Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS3 December 1923
NLB/65/898Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS25 January 1924
NLB/65/713Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS12 December 1923
NLB/66/73Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS18 February 1924
NLB/66/100Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [John Cunnigham] McLennan, FRS22 February 1924
NLB/66/166Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [John Cunningham] McLennan, FRS6 March 1924
NLB/65/771Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS21 December 1923
NLB/67/703Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS18 February 1925
NLB/66/319Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [Thomas Ralph] Merton, FRS8 April 1924
NLB/67/541Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS17 January 1925
NLB/67/587Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS24 January 1925
NLB/67/887Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS1 April 1925
RR/31/25Referee's report by Robert Strutt, Lord Rayleigh, on a paper 'On the luminescence of nitrogen, argon, and other condensed gases at very low temperatures' by John Cunningham McLennan and G M Shrum[June 1924]
NLB/68/305Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS16 June 1925
RR/30/8Referee's report by John Cunningham McLennan, on a paper 'Note on Vegard's theory of the aurora' by Robert d'Escourt Atkinson24 July 1924
NLB/66/918Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS23 September 1924
NLB/71/15Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Secretary, Office of the High Commissioner for Canada, Canadian Building, Trafalgar Square, SW15 December 1927
NLB/69/471Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [John Cunningham] McLennan, FRS27 April 1926
NLB/69/355Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [John Cunningham] McLennan, FRS17 March 1926
NLB/70/933Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS8 November 1927
NLB/71/1Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the High Commissioner for Canada, Trafalgar Square, SW11 December 1927
NLB/66/717Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS25 June 1924
IM/002896McLennan, Sir John CunninghamJuly 1936
NLB/20/486Copy letter from Robert William Frederick Harrison, to Charles Thomas Rees Wilson, [Fellow of the Royal Society], The Cavendish Laboratory, Cambridge3 May 1900
NLB/20/622Copy letter from Robert William Frederick Harrison, to Professor John Cunningham McLennan, Toronto, [Fellow of the Royal Society]1 June 1900
NLB/21/300Copy letter from Robert William Frederick Harrison, to John Cunningham McLennan, Toronto23 October 1900
RR/27/110Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the structure of the wavelength = 6708 A. of the isotopes of lithium' by John Cunningham McLennan and D S AinslieApril 1922
NLB/58/912Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [John Cunningham] McLennan, FRS3 July 1920
RR/47/46Referee's report by John Cunningham McLennan, on a paper 'Velocity of propagation of light in vacuo in a transverse magnetic field' by Clinton Coleridge Farr and C J BanwellApril 1932
NLB/65/140Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS10 August 1923
NLB/66/318Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh8 April 1924
NLB/20/482Copy letter from Robert William Frederick Harrison, to John Cunningham McLennan, [Fellow of the Royal Society], University of Toronto,Toronto, Canada2 May 1900
RR/32/96Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the origin of the auroral green line 5577 Å, and other spectra associated with aurora borealis' by John Cunningham McLennan and G M Shrum1925
RR/34/60Referee's report by Alfred Fowler, on a paper 'On the structure of the arc spectrum of gold' by John Cunningham McLennan and A B McLay[June 1926]
NLB/60New Letter Book volume 60, copy letters sent from Royal Society administration2 December 1920-26 April 1921
RR/34/59Referee's report by Ralph Howard Fowler, on a paper 'Atomic states and spectral terms' by John Cunningham McLennan, A B McLay and H Grayson Smith[June 1926]
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