DEDICATED TO THE 

 MEMORY OF MY BROTHER 



WILLIAM SCOTT ROBERTSON 



LIEUT., ROYAL AIR FORCE 



BORN 1 JUNE, 1898, KILLED IN THE AIR 

 OVER THE GERMAN LINES 13 JULY, 1918 



A YOUNG LIFE WHICH GAVE EARLY 



PROMISE OF CONTRIBUTING 



TO THE ADVANCEMENT 



OF SCIENCE 



