210 Luck, or Cunning ? 
will appear shortly. I can form no idea whether Mr. F. 
Darwin’s forthcoming work is likely to appear before this 
present volume ; still less can I conjecture what it may or 
may not contain ; but I can give the reader a criterion by 
which to test the good faith with which it is written. If 
Mr..F. Darwin puts the distinctive feature that differen- 
tiates Mr. C. Darwin from his predecessors clearly before 
his readers, enabling them to seize and carry it away with 
them once for all—if he shows no desire to shirk this 
question, but, on the contrary, faces it and throws light 
upon it, then we shall know that his work is sincere, what- 
ever its shortcomings may be in other respects ; and when 
people are doing their best to help us and make us under- 
stand all that they understand themselves, a great deal may 
be forgiven them. If, on the other hand, we find much talk 
about the wonderful light which Mr. Charles Darwin threw 
on evolution by his theory of natural selection, without any 
adequate attempt to make us understand the difference 
between the natural selection, say, of Mr. Patrick Matthew, 
and that of his more famous successor, then we may know 
that we are being trifled with; and that an attempt is 
being again made to throw dust in our eyes. 
