EXPERIMENT REQUIRED 373 



Moreover, the question whether the lower animals 

 suffer from true cancer is still controversial. I 

 therefore considered whether it would be possible to 

 try this crucial experiment on a human being. If it 

 were possible, and if it were successful, the point might 

 be proved conclusively. At first sight the suggestion 

 seems to be an outrageous one, but the experiments to 

 be related in the next and last chapter, which had been 

 carried out for several months past, revealed a method 

 by which I considered that an attempt might be made 

 to put this crucial experiment to the test. 



