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PREFACE 



This small volume has been written for students 

 and general readers who may desire to know 

 something of the life and work of Pasteur, but who 

 hesitate to undertake the perusal of more compre- 

 hensive biographies. In the preparation of this 

 sketch I have been greatly indebted to the incom- 

 parable Life of Pasteur by Vallery-Radot, and I 

 hope that what I have written may induce many 

 of my readers to make the acquaintance of this 

 larger work. I owe much also to the valuable 

 History of a Mind by Emile Duclaux who was for 

 several years one of Pasteur's ablest co-workers 

 and hence exceptionally qualified for the task which 

 he has so well accomplished. Among other useful 

 sources of information especial mention may be 

 made of Roux's UCEuvre medicate de Pasteur, 

 which, like the preceding works, was written on 

 the basis of intimate personal knowledge. 



The present book is the product of a long-felt 

 admiration for Pasteur and his achievements. I 

 do not pretend to have made any new contributions 



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