106 ILLINOIS ACADEMY OF SCIENCE 
numbers of them have tried to find a serum or an agent that 
will attack the condition through the channels of the blood. 
But so far nothing of striking effectiveness has been worked 
out, 
I asked a great authority in pathology on the other side of 
the water, one of my teachers, many years ago, if the cause of 
cancer would ever be discovered and he replied after the man- 
ner of the oracle at Delphi: “The man who discovers the cause 
of cancer will be in a position to describe the anatomy of the 
human soul.” 
