PREFACE xi 



tions which has been of so great service. Such are 

 the serious claims for its adoption. 



The resume which I have just given of Dr. Bes- 

 redka's book is out of all comparison with the value 

 of the book itself. I must apologise to the reader 

 for having kept him so long upon the threshold. In 

 discoursing on the pleasure I have had in reading 

 them, I have delayed his enjoyment of the perusal 

 of these pages in which a very interesting but at the 

 same time very complicated subject is expounded in 

 an attractive manner. 



DR. ROUX. 



