CONTENTS 



A FOREWORD 

 ON THE RELATIONS OF SCIENCE AND PROGRESS 



An object - lesson : The great school of science at Alex- 

 andria, 300 B.C., and its relative failure through the lack of 

 accurate instruments, or appreciation of mechanical de- 

 vices The intimate relations of mechanics to modern 

 civilization The present achievements of the scientific 

 method The rdle of science in the future : its aims, its 

 task Page 3 



THE WORLD BEYOND OUR SENSES 



Researches which reveal how little we know of the real 

 world around us, as it is presented to us by our primitive 

 senses How these primal senses are being extended, and 

 new senses are being added Page 41 



THE FINITE UNIVERSE 



The facts which indicate that the stellar universe is 

 not " infinite," but of definite size, shape, and mass, meas- 

 urable and weighable The means by which its boun- 

 daries are being fixed and its form determined, and 

 the inferences that may be drawn from our present 



knowledge Page 73 



vii 



