<dt» 
PROOEEDIFGS^ 
OF THE 
ROYAL SOCIETY OF EDIFBUROH. 
SESSION 1914-15. 
Part II.] VOL. XXXV. [Pp. 113-224. 
CONTENTS. 
NO. PAGE 
XI. The Reaction between Sodamide and Hydrogen. By F. D. 
Miles, B.Sc., A.R.C.S. Communicated hy Principal A. P. 
Laurie, D.Sc., ..... 134 
{Issued, separately April 27, 1915.) 
XII. On the Electrical Conductivity of Aqueous Hydrochloric Acid, 
saturated with Sodium Chloride ; and on a new form of 
Conductivity Cell. By F. D. Miles, B.Sc., A.R.C.S. 
Communicated hy Principal A. P. Laurie, D.Sc., . . 138 
{Issued separately April 27, 1915.) 
XIII. The Reflective Power of Pigments in the Ultraviolet. By 
Charles Cochrane, M.A., B.Sc., Assistant to the Pro- 
fessor of Natural Philosophy in the University of Glasgow. 
Communicated hy Dr R. A. Houstoun, . . . 146 
{Issued separately May 21, 1915.) 
XIV. The Theory of the Gyroscope. By Professor H. Lamb, F.R.S., 153 
{Issued separately May 25, 1915.) 
XV. The Densities and Degrees of Dissociation of the Saturated 
Vapours of the Ammonium Halides. By Professor 
Alexander Smith and Robert H. Lombard, . .162 
{Issued separately May 22, 1915.) 
[^Continued on page iv of Cover. 
EDINBURGH : 
Published by ROBERT GRANT & SON, 107 Princes Street, and 
williams & NORGATE, 14 Henrietta Street, Covent Garden, London. 
MDCCCCXV. 
Price Six Shillings. 
