A SCIENTIFIC CREED OUTWORN. 93 
Prof. Williston, of Chicago, says: “The causes of 
organic evolution are still an unsolved problem; and 
he will be a greater man than Darwin, who finally dem- 
onstrates them.” 
Thus these recognized authorities, while accepting 
the theory, add many limitations and admit that the 
“method,” the “manner,” the “process,” the “conditions” 
and the “causes” of the movement are still unknown. 
What, then, remains of the theory? Not much but the 
name. 
