128 PASTEUR 



never sparing himself, never in any way thinking of 

 himself But, above all, it was due to the intense 

 thought he bestowed upon his researches. Concen- 

 trating his intellect upon the problem in question, he 

 thought out all possible solutions, and was prepared 

 for all possible eventuahties. It was this power of 

 thought, coupled with a matchless gift of observation 

 and experiment, that enabled him to leave a name 

 which cannot be forgotten whilst civilization endures. 



