1908 - 9 .] 
Meetings of the Society. 
755 
FIFTH ORDINARY MEETING. 
Monday, 4 tli January 1909. 
Dr R. H. Traquair, F.R.S., Vice-President, in the Chair. 
The following Communications were read 
1. On the Fossil Osmundacese. Part III. By R. Ividston, LL.D., F.G.S., and D. T. 
Gwynne-Vaughan, M.A. 
Supplementary Report on the Hy droids of the Scottish National Antarctic Expedition. By 
James Ritchie, M.A., B.Sc. Communicated by Dr W. S. Bruce. 
SIXTH ORDINARY MEETING. 
Monday, 18 tli January 1909, 
Professor A. Gray, F.R.S., Vice-President, in the Chair. 
Mr W. Gentle signed the Roll, and was duly admitted a Fellow of the Society. 
The following Communications were read : — 
1. The Influence of Castration upon Bone-Growth and Giantism. By A. Campbell Geddes, 
M. D. , Demonstrator of Anatomy, University of Edinburgh. Communicated by Professor 
Cunningham. ( With Lantern Illustrations.) 
2. Flexural Vibrations of Thin Rods. By George Green, M. A., B.Sc. Communicated by 
Professor A. Gray. 
The following Gentlemen were balloted for, and declared duly elected Fellows of the Society : — 
James G. Gray, B.Sc., Henry R. Kenwood, M.B., Alexander D. Ross, M.A., B.Sc., and 
C. R. Marshall, M.D., M.A. 
SEVENTH ORDINARY MEETING. 
Monday, ls£ February 1909. 
Dr James Burgess, Vice-President, in the Chair. 
Messrs J. G. Gray, B.Sc., A. D. Ross, M.A., B.Sc., and C. R. Marshall, M.D., signed the 
Roll, and were duly admitted Fellows of the Society. 
The following Communications were read : — 
1. Magnetic Quality in the Homogeneous Hexagonal Arrangement of Molecular Magnets. By 
Professor W. Peddie. 
2. On an Improved Form of Magnetometer and Accessories for the Testing of Magnetic 
Materials at Different Temperatures. Communicated by Professor A. Gray, F.R.S. By James 
G. Gray, B.Sc., Lecturer on Physics in the University of Glasgow, and Alexander D. Ross, 
M. A., B.Sc., Assistant to the Professor of Natural Philosophy in the University of Glasgow. 
3. On the Conditions for the Reversibility of the Order of Partial Differentiation. By W. H. 
Young, Sc.D., F.R.S. Communicated by J. H. Maclagan Wedderburn, D.Sc. 
EIGHTH ORDINARY MEETING. 
Monday, Ihth February 1909. 
Professor A. Gray, LL.D., Vice-President, in the Chair. 
The following Communicatioi^s were read : — 
1. The Electro-motive Force of Iodine Concentration Cells with one Electrode saturated with 
Iodine. By Principal A. P. Laurie, D.Sc. 
2. On the Magnetic Properties of certain Copper Alloys. By Alexander D. Ross, M.A., 
B. Sc., Assistant to the Professor of Natural Philosophy in the University of Glasgow, and Robert 
C. Gray, Thomson Experimental Scholar in the University of Glasgow. 
8. Some Low Temperature Experiments in Magnetism. By James G. Gray, B.Sc., Lecturer 
in Physics in the University of Glasgow, and Hugh Higgins, M.A., Thomson Experimental 
Scholar in the University of Glasgow. 
4. On Lagrange’s Equations of Motion and on Elementary Solutions of Gyrostatic Problems. 
By Professor Andrew Gray, F.R.S. 
The following Candidates for Fellowship were balloted for, and duly elected Fellows of the 
Society: — John Brownlee, M.A., M.D., D.Sc., Bernard Langley Mills, M.D., F.R.C.S. 
E. and L., Arthur Geo. Sydney Mitchell, Reginald L. A. E. Westergaard. 
