INDEX. 
Accounts of the Society, Session 1919-20, 219. 
Additions to Library by Gift or Purchase, 249. 
Air Ministry, Meteorological Committee, So- 
ciety’s Representative, 207. 
Aitken. John (The late). Thermometer Screens, 
172-181. 
Algebra of the Relations of Physics and Rela- 
tivity, Quaternionic System as, by W. Peddie, 
80-82. 
Anomaly, The Explanation of an apparent, in 
the Results of Measurement of Dissociation 
Pressures, by Alan W. C. Menzies, 158-160. 
Appeal to Fellows (Special Subscription Fund), 
201, 208. 
Awards of Prizes, 218. 
Baldv/in (R.). See Doodson (A. T.) and R. M. 
Carey. 
Ballantyne (J. W.). Obituary Notice of David 
Berry Hart, 185-186. 
Balsillie (David). Petrography of the Intrusive 
Igneous Rocks in the neighbourhood of 
Dundee. {Title only), 206. 
Bannerman (W. B. ). Obituary Notice of W. C. 
Gorgas, 187-190. 
Becker (L.). The Daily Temperature Curve, 
89-101. 
Bernard (John Mackay), Obituary Notice of, 2. 
Beveridge, Erskine, Obituary Notice of, 191. 
Binding sets in Library, Grant from Carnegie 
U.K. Trust, 207. 
Carey (R. M.). See Doodson (A. T.) and R. 
Baldwin. 
Carnegie U.K. Trust. £3000 for Binding, 207. 
Chancellor of the Exchequer, Correspondence re 
Increased Grant, 199-201. 
Contributions to Special Subscription Fund, 
List of, 208. 
Council, List of, at October 1919 and October 
1920, 202, 208, 226. 
Daily Temperature Curve, by L. Becker, 89- 
101 . 
Dallas (Miss). See Knott (C. G. ). 
Determinant whose Matrix is the Sum of Two 
Circulant Matrices, by Sir Thomas Muir, 23-32. 
Dissociation Pressures, The Explanation of an 
apparent Anomaly outstanding in the Results 
of Measurement of, by Alan W. C. Menzies, 
158-160. 
Doodson (A. T.), R. M. Carey, and R. Baldwin. 
Theoretical Determination of the Longitudinal 
Seiches of Lake Geneva. {Title only), 203. 
Ewart (J. C.). Nestling Feathers of Birds. 
{Title only), 204. 
Ewing (Sir J. A.). Molecular Energy in Gases, 
102 - 111 . 
Fairley (Thomas), Obituary Notice of, 3. 
Fellows, Honorary, 205, 206, 246. 
Obituary Notices of, 1-9, 182-195. 
Ordinary, 227. 
Deceased and resigned during Session 
1919-20, 248. 
Elected during Session 1919-20, 204, 248. 
Ferguson (D. ). Geological Observations in the 
South Shetlands, the Palmer Archipelago, and 
the Danco Coast, Grahamland. ( Title only), 
204. 
Fischer (Emil), Obituary Notice of, 1. 
Franklin (T. B. ). The Cooling of the Soil at 
Night, with Special Reference to Late Spring 
Frosts (II), 10-22. 
The Effect of Weather Changes on Soil 
Temperatures, 56-79. 
Fullarton (J. Hamilton), Obituary Notice of, 
191. 
Fund, Special Subscription, 201, 208. 
Gases, Molecular Energy in, by Sir J. A. Ewing, 
102 - 111 . 
Geography, National Union of, 207. 
Goold (Joseph). The Musical Scale, 161-171. 
Gorgas (W. C. ), Obituary Notice of, by W. B. 
Bannerman, 187-190. 
Government Grant, Application for increased, 
199-201. 
Graduation Formulae, On a Class of, by Catherine 
W. M. Sherriff, 112-128. 
Graham (Richard D. ), Obituary Notice of, 191. 
Grant for Binding from Carnegie U.K. Trust 
(£3000), 207. 
Green (Charles E. ), Obituary Notice of, 191- 
192. 
Greenfield (W. S.), Obituary Notice of, 4. 
Gunn (J. A.) and D. G. Marshall. The 
Harmala Alkaloids in Malaria, 140-149. 
Hamilton (Allan M‘Lane), Obituary Notice of, 
192-194. 
Harmala Alkaloids in Malaria, by J. A. Gunn 
and D. G. Marshall, 140-149. 
Hart (David Berry), Obituary Notice of, by 
J. W. Ballantyne, 185-186. 
Hitchcock (F. L.). An Identical Relation con- 
necting Seven Vectors, 129-139. 
Honorary Fellows, elected 1919-20, 205, 206. 
