IV 
CONTENTS. 
PAGE 
NO. 
XXIII. On tiie Cohesion of Steel, and on the Relation between the 
Yield Points in Tension and in Compression. By G. H. 
Gulliver, B.Sc., A.M.I.Mech.E., Lecturer in Engineering 
in the University of Edinburgh, . . . .374 
{Issued separately July 20, 1908.) 
XXI Y. The Electromotive Force of Iodine Concentration Cells in 
Water and Alcohol. By A. P. Laurie, M.A., D.Sc., 
Principal of the Heriot-Watt College, Edinburgh, . 382 
{Issued separately July 22, 1908.) 
XXV. Inversion Temperatures, and the Form of the Equation of 
State. By Professor W. Peddie, . . . 394 
{Issued separately July 22, 1908.) 
XXYI. Treatment of Aneurysm by Electrolysis. By Dr Dawson 
Turner, ....... 400 
{Issued separately July 23, 1908.) 
XXVII. Experiments with Heusler’s Magnetic Alloy. By James 
G, Gray, B.Sc., Lecturer on Physics. in the University 
of Glasgow. ( Communicated- by Professor A. Gray, 
F.R.S.), ....... 403 
{Issued separately July 23, 1908.) 
XXVIII. The Theory of Hessians in the Historical Order of 
Development up to 1860. 
By Thomas Muir, LL.D., . 413 
{Issued separately July 23, 1908.) 
The Papers published in this Part of the Proceedings may \be 
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