Index. 
309 
Horsman (Elsie). See Harvey-Gibson (R. J.), 
253. 
Host-plant, Second, of Myzus ribis, by Maud 
D. Haviland, 78-112. 
Houstoun (R. A.). X-Ray Optics, Pt. L ( Title 
only), 255. 
Index of Papers published in Transactions 
during Session 1918-19, 311. 
Industrial Research, Endowment of Scientific 
and, by John Horne, 1-9. 
International Association of Academies. Sir 
E. Sharpey Schafer and Dr C. G. Knott 
appointed Delegates to Paris Meeting, 258. 
Invariants in Dynamics, The Relation of, with 
Hamilton’s Principle, by G. H. Livens, 
113-119. 
Isobutyl Dibenzoyl-d-Tartrate, Rotation in 
Homogeneous Condition in Cinnamic Alde- 
hyde and in Ethylene Bromide, by T. S. 
Patterson and K. L. Moudgill, 18-34. 
Isotherm, Adsorption, at Low Concentrations, 
by A. M. Williams, 48-55. 
Kinnear (Alexander Smith), Obituary Notice of, 
13- 14. 
Knott (C. G. ). The Propagation of Earthquake 
Waves through the Earth, and connected 
Problems, 157-208. 
Laws of the Society, 301. 
Lawson (A. Anstruther). Awarded Makdougall- 
Brisbane Prize for period 1916-1918, 254, 255, 
266. 
Letts, Edmund Albert, Obituary Notice of, 14. 
List of Additions to Library by gift or purchase, 
298. 
Honorary Fellows, 295-296. 
Ordinary Fellows, 276-294. 
Ordinary and Honorary Fellows deceased 
and resigned during Session 1918-19, 297. 
Ordinary Fellows of the Society elected 
during Session 1918-19, 297. 
Papers published in Transactions during 
Session 1918-19, 311. 
Livens (G. H.). On Hamilton’s Principle and 
the Modified Function in Analytical Dyna- 
mics, 113-119. 
Logie (John). The Origin of Anticyclones and 
Depressions, 56-77. 
MacKenzie (Kenneth John), Obituary Notice of, 
14- 15. 
Makdougall-Brisbane Prize, Award of, to A. 
A. Lawson, 254, 255, 266. 
Marr (Colonel R. A. ). Exhibitions of Samples of 
Encysted Wood presented by. ( Title only), 255. 
Marshall (C. R.). On the Mode of Action of 
Metal Sols, 143-148. 
Some Conditions influencing the Reaction 
Telocity of Sodium Nitrite on Blood, 149-156. 
Marshall (John). An Analysis of an Electron- 
Transference Hypothesis of Chemical Valency 
and Combination, 209-233. 
Meetings of the Society, Proceedings of the 
Ordinary, 1918-19, 253. 
Proceedings of the Statutory General, 
1918, 1919, 251, 256. 
Memorandum to Treasury for increased Govern- 
ment grant, 256. 
Metzler (W. H. ). Factors of Circulants, 41-47. 
Milne (J. R. ). A “Duplex” Form of Har- 
monic Synthetiser and its Mathematical 
Theory, 234-242. 
Mitchell (A. C. ). On Pulsations of the Vertical 
Component of Terrestrial Magnetic Force. 
( Title only), 255. 
Moudgill (K. L.). See Patterson (T. S.). 
Muir (Sir Thomas). Note on the Determinant 
of the Primary Minors of a Special Set of 
{n-l)-by-n Arrays, 35-40. 
Myzus ribis, Life- history and Bionomics of, by 
Maud D. Haviland, 78-112. 
Nettle, Presence of Formic Acid in Stinging 
Hairs of, by Leonard Dobbin, 137-142. 
Nitrite, Sodium, Some Conditions influencing 
the Reaction Velocity of, on Blood, by C. R. 
Marshall, 149-156. 
Obituary Notice of Sir James Alexander Russell, 
243-248. 
Obituary Notices of Fellows, 10-17- 
Optical Activity, Researches in. Part I : The 
Temperature- Rotation Curves for the Tartrates 
at Low Temperatures, by T. S. Patterson and 
K. L. Moudgill, 18-34. 
Ordinary Meetings, Proceedings of, Session 
1918-19, 253. 
Origin of Anticyclones and Depressions, by John 
Logie, 56-77. 
Papers, List of, read during Session 1918-19, 
253. 
Patterson (T. S. ). Researches in Optical 
Activity. Part I : The Temperature- Rota- 
tion Curves for the Tartrates at Low Tempera- 
tures, 18-34. 
Peddie (W.). On the Thermodynamics of 
Unstable States. ( Title only), 254. 
Prashad (Baini). See Stephenson (J. ). 
Prizes, Conditions governing, and Awards, 260, 
263. 
Proceedings of the Ordinary Meetings, Session 
1918-19, 253. 
Proceedings of the Statutory General Meetings, 
October 1918, October 1919, 251, 256. 
Quinlan (Christine E.). Contributions towards 
a Knowledge of the Anatomy of the Lower 
Dicotyledons. III. Anatomy of the Stem of 
Calcanthacese {Title only), 253. 
Ram (Haru). See Stephenson (J.). 
Report of the Secretary, 1918-19, 256. 
Research, Endowment of Scientific and Indus- 
trial, by John Horne, 1-9. 
Ronaldson (Thomas R.). Obituary Notice of 
Sir James Alexander Russell, 243-248. 
i Russell, Sir James Alexander, Obituary Notice 
! of, by Thomas R. Ronaldson, 243-248. 
Scientific and Industrial Research, Endowment 
of, by John Horne, 1-9. 
Secretary’s Report, 1918-19, 256. 
