X FOREWORD 



vestigators, that the scientific world has today a somewhat justifiable 

 scepticism of the validity of similar new work. The author and the 

 Carnegie Institution offer this data and these findings to the critical 

 examination of others to ascertain in how far they may become estab- 

 lished in that general consensus which is science and afford a basis for 

 further advances into the mathematical difficulties of cycle analysis, into 

 the perplexing problems of scientific induction therefrom and into those 

 fields of science in which the realization of our present hopes seems 

 bound up with a fuller comprehension and utilization of these methods. 



E. B. Wilson 



