PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1909-10. 
Part I.] VOL. XXX. [Pp. 1-64. 
CONTENTS. 
NO. * PAGE 
I. Andrews’ Measurements of the Compression of Carbon Dioxide 
and of Mixtures of Carbon Dioxide and Nitrogen. Edited 
by Professor C. G. Knott, ..... 1 
(. Issued separately December 1, 1909.) 
II. Seismic Radiations. — Part II. By Professor C. G. Knott, . 23 
( Issued separately December 23, 1909.) 
III. A New Experimental Method of investigating Certain Systems 
of Stress. By G. H. Gulliver, B.Sc., A.M.I.Mech.E., 
Lecturer in Engineering in the University of Edinburgh, . 38 
{Issued separately December 23, 1909.) 
IV. On the Illuminating Power of Groups of Pin-hole Burners. By 
R. G. PI arris, Physical Laboratory, Edinburgh University. 
( Communicated by Professor MacGregor), . . 46 
{Issued separately December 23, 1909.) 
Y. A New Hydrate of Orthophosphoric Acid. By Alexander 
Smith and Alan W. C. Menzies. {Abstract), . . 63 
{Issued separately December 23, 1909.) 
•~,'r Yrs E 
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