xii INTRODUCTION 



shows him very young, slender and alert, with the supple 

 figure of a mountaineer. He is rather small, he has very 

 delicate members, especially his hands, which seem to 

 think. His manner of walking is full of a self-restrained 

 alacrity. His head is large with a good cranial capacity, 

 finely formed, bristling with dark brown hair cut close 

 and planted low and tufted around a perpendicular fore- 

 head which is ample but not high. The mask is a little 

 melancholy, elongated as in portraits of the sixteenth 

 century. In this thin visage there are fine eyes, very 

 blue, by turns dreamy, teasing, tender or profound but 

 always limpid. If the eyes suggest poetry, the long nose 

 stands for sagacity and goodness, although the fleshy 

 end trembles in moments of impatience. Fine ears, 

 elongated at the tip like those of a faun, give to this grave 

 oval head of the thinker a delicately rustic character. 

 Already he had the air which I loved so much, a modest, 

 ardent and good expression. Something of the harsh 

 accent of Cantal still vibrated in his voice in spite of the 

 lessons in diction taken at the Institution Barbet and at 

 the Normal School. 'Say terrrine, Duclaux,' Madame 

 Pasteur will often say to him, laughingly. The young 

 man spoke well and sometimes copiously, with charm 

 and spirit, but of his personal ideas he was not very com- 

 municative, being timid as well as independent. He 

 gave, however, an impression of joyousness when one 

 looked at him, going and coming from one piece of 

 apparatus to another, humming some arietta of Mozart 

 or the refrain of a popular song heard in the street." 



At this time Pasteur worked in very cramped quarters 

 in the rue d'Ulm. From such quarters, hardly fit for a 

 rabbit hutch, as Duclaux said, started the movement 

 which was to revolutionize science. Here in the Nor- 

 mal School Duclaux was lodged, fed and received as 

 compensation 47 fr.-50 per month. But what are wages 



