204 Proceedings of the Royal Society of Edinburgh. [Sess. 
FOURTH ORDINARY MEETING. 
Monday , February 2, 1920. 
Sir George A. Berry, M.B., O.M., LL.D., F.R.C.S.E., Vice-President, in the Chair. 
The following Communications were submitted : — 1 
1. Magnetic Strains in Nickel Steel Tubes. By Dr C. G. Knott and Miss Dallas. 
2. The Adequacy of the Young-Helmholtz Theory of Colour-Vision and Colour-Blindness. By 
Professor W. Peddie, D.Sc. 
3. On the Quaternionic System as the Algebra of the Relations of Physics and Relativity. By 
Professor W. Peddie, D.Sc. Proc., vol. xl, pp. 80-82. 
FIFTH ORDINARY MEETING. 
Monday , March 1, 1920. 
Professor Frederick 0. Bower, M.A., D.Sc., LL.D., F.R.S., F.L.S., President, in the Chair. 
The Annual Election of Fellows took place. The following were elected: — Hkrbert Stanley 
Allen, Ernest Masson Andicrson, Richard Siddoway Bagnall, Edward Battersby 
Bailey, R. G. Carruthers, William Grant Craib, Thomas Bedford Frankltn, Sudhamoy 
Ghosh, William Gordon, Alexander Robert Horne, James Gall Inglis, John Charles 
Lamont, Thomas A. Lindsay, Stuart M‘ Donald, John Marshall, George Leslie Purser, 
William Robfrt Smellie, John Barber Todd, Thomas Walmsley, Malcolm Wilson. 
The following Communications were submitted : — 
1. New Stelar Facts, and their Bearing on Stelar Theories for the Ferns. By Dr J. M‘Lean 
Thompson. Trans., vol. lii, pp. 715-735. 
2. On the Nestling Feathers of Birds. By Professor J. C. Ewart, F.R.S. 
3. Note on Pfaffians with Polynomial Elements. By Sir Thomas Muir, C.M.G., F.R.S. 
Proc., vol. xl, pp. 83-88. 
SIXTH ORDINARY MEETING. 
Monday , March 15, 1920. 
Professor Frederick O. Bower, M.A., D.Sc., LL.D., F.R.S., F.L.S., President, in the Chair. 
The following Communications were submitted : — 
1. The Effect of Weather Changes on Soil Temperatures. By Captain T. Bedford Franklin. 
Proc., vol. xl, pp. 56-79. 
2. (a) Geological Observations in the South Shetlands, the Palmer Archipelago, and the Danco 
Coast, Grahamland. By D. Ferguson, M.I.Min. Eng. Communicated by G. W. Tyrrell, 
A.R.C.Sc., F.G.S. Trans. 
(b) A Contribution to the Petrography of the South Shetlands, the Palmer Archipelago, and the 
Danco Coast, Grahamland. By G. W. Tyrrell. A.R.C.Sc., F.G.S. Trans. 
(c) Petrographical Notes on Rocks from Deception Island and Roberts Island (South Shetlands), 
the Danco Coast and Adjacent Islands, Grahamland. By H. H. Thomas, D.Sc., F.G.S. Com- 
municated by G. W. Tyrrell, A.R.C.Sc., F.G.S. Trans. 
3. On a Class of Graduation Formulae. By Miss C. W. M. Sherriff. Communicated by 
Professor E. T. Whittaker, F.R.S. Proc., vol. xl, pp. 112-128. 
4. The Daily Temperature Curve. By Professor L. Becker, Ph.D. Proc., vol. xl, pp. 83-101. 
The following recently elected Fellows signed the Roll and were duly admitted to the 
Society: — E. M. Anderson, E. B. Bailey, W. G. Craib, T. B. Franklin, W. Gordon, J. G. 
Inglis, G. L. Purseu, J. B. Todd, and M. Wilson. 
The Council gave notice that the following changes of rule will be submitted for discussion 
by the Society at an early date : — 
Law VIII. 
Honorary Fellows shall be persons eminently distinguished in Science or Literature. They 
shall not be liable to contribute to the Society’s Funds. Personages of the Blood Royal may 
be elected Honorary Fellows at any time on the nomination of the Council, and without regard to 
the limitation of numbers specified in Law I. 
