] V 
CONTENTS. 
No. PAGE 
VII. The Relation of the Soil Colloids to the Thermal Conductivity 
of the Soil. By Capt. T. Bedford Franklin, B.A. 
(Cantab.), 61 
{Issued separately May 9, 1921.) ■ 
VIII. On a Graphical Method of determining Shear Influence Lines 
and Diagrams of Maximum Shearing Force for a Beam 
subjected to a Series of Concentrated Rolling Loads. By 
Alex. R. Horne, B.Sc. (Lond.), Professor of Engineering, 
Robert Gordon’s Technical College, Aberdeen, ... 68 
(Issued separately May 9, 1921.) 
IX. The Confluent Hypergeometric Functions of Two Variables. 
By Pierre Humbert. Communicated by Professor E. T. 
Whittaker, F.R.S., 73 
(Issued sep>arately May 9, 1921.) 
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