PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1908-9. 
Part IV.] 
VOL. XXIX. [Pp. 193-384. 
CONTENTS. 
NO. PAGE 
XIII. Life and Chemical Work of Archibald Scott Couper. By 
Richard Anschutz, Ph.D., LL.D., Professor of Chemistry 
in the University of Bonn. ( Translated and communi- 
cated by Emeritus- Professor A. Crum Brown, M.D., D.Sc., 
LL.D.) (With Two Plates), .... 193 
(Issued separately April 30, 1909.) 
XIV. On the Magnetic Properties of certain Copper Alloys. By 
Alexander D. Ross, M.A., B.Sc., Assistant to the Pro- 
fessor of Natural Philosophy in the University of Glasgow, 
and Robert C. Gray, Thomson Experimental Scholar in 
the University of Glasgow, . . . . .274 
(Issued separately May 3, 1909.) 
XV. Low Temperature Experiments in Magnetism. By James 
G. Gray, B.Sc., Lecturer on Physics in the University of 
Glasgow, and Hugh Higgins, M.A., Thomson Experi- 
mental Scholar in the University of Glasgow. ( Com- 
municated by Professor A. Gray, F.R.S.), . . . 287 
(Issued separately May 11, 1909.) 
XVI. On the Discharge of Water from Circular Weirs and Orifices. 
By G. H. Gulliver, B.Sc., A.M.I.Mech.E., Lecturer in 
Engineering in the University of Edinburgh, . . 295* 
(Issued separately May 11, 1909.) 
[ Continued on page iv of Cover. 
EDINBURGH : 
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