ATOMIC DISIiSTTEGEATION MILLIKAlsr 285 



perhaps necessarily suggested. If Sir James Jeans prefers to hold 

 one view and I another on this question, no one can say us nay. 

 The one thing of which wo may all be quite sure is that neither of 

 us knows anything about it. But for the continuous building up of 

 the common elements out of hydrogen in the depths of interstellar 

 space the cosmic raj's furnish considerable experimental evidence. I 

 am not unaware of the difficulties of finding an altogether satisfactory 

 kinetic picture of how these events take place, but acceptable and 

 demonstrable facts do not, in this twentieth century, seem to be dis- 

 posed to wait on suitable mechanical pictures. Indeed, has not mod- 

 ern physics thrown the purely mechanistic view of the universe root 

 and brancli out of its house? 



