728 Proceedings of Royal Society of Edinburgh. 
[SESS. 
TWELFTH ORDINARY MEETING. 
Monday , 5 th June 1899. 
Mr A. Beatson Bell in the Chair. 
The following Communications were read : — 
1. Note. on a Persymmetric Eliminant. By Thomas Muir, LL.D. 
pp. 543-546. 
2. Contributions to the Life-Histories of the Cod and the Whiting. 
By A. T. Masterman, D.Sc. Trans., xl. 
3. The Hydrolysis of Thallic Sulphate. By Hugh Marshall, D.Sc. 
pp. 596, 597. 
Mr Alexander G. Ramage was balloted for, and declared duly 
elected a Fellow of the Society. 
THIRTEENTH ORDINARY MEETING. 
Monday , l§th June 1899. 
Sir William Turner, M.B., Vice-President, in the Chair. 
Mr Alexander G. Ramage and Dr T. H. Bryce were admitted 
Fellows of the Society. 
The following Communications were read : — 
1. On the Eliminant of a Set of General Ternary Quadrics. By 
Thomas Muir, LL.D. Trans., xxxix. pp. 667-684. 
2. On the Structure and Affinities of a Lepidodendron Stem from the 
Calciferous Sandstone of Dalmeny. ( With Lantern Illustrations.) By 
A. C. Seward, M.A., F.R.S., and A. W. Hill, B.A. Communicated by 
R. Kidston, F.G.S. Trans., xxxix. 
3. On Duplicitas Anterior in an early Chick Embryo. ( With Lantern 
Illustrations.) By T. H. Bryce, M.A., M.B., Queen Margaret College, 
Glasgow University, pp. 622-630. 
4. The Trap-Dykes of the Orkneys. ( With Lantern Illustrations.) 
By J. S. Flett, M.A., B.Sc. Trans., xxxix. pp. 865-905. 
5. On the Vascular System of the Plypocotyl and Embryo of Ricinus 
communis. By Edith Chick, B.Sc., Quain Student, University College, 
London. Communicated by Sir John Murray, K.C.B. pp. 652-672. 
6. Note on Mr J. O. Thompson’s Paper on the Torsional Vibrations of 
Wires. By W. Peddie, D.Sc. pp. 598-600. 
7. Obituary Notice of Major-General Gosset. By Mr John Winzer. 
pp. v., vi. 
