DISSYMMETRY OF CELLULAR LIFE 31 



push out shoots by changing the direction of the light 

 rays which struck it. These attempts gave nothing, 

 either to him or to those after him. But it is possible 

 that, repeated with greater persistence and with more 

 powerful means, they would result in something, and 

 that this something would be so remarkable that it 

 would pay for all the trouble taken to produce it. We 

 cannot justly scorn any of these ideas of Pasteur when 

 we see how fruitful have been all those which he pursued. 





